diff --git a/HEADER.txt b/HEADER.txt
new file mode 100644
index 00000000..9f7cf8e9
--- /dev/null
+++ b/HEADER.txt
@@ -0,0 +1,14 @@
+Copyright (C) 2018 Velocity Contributors
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
index 44ba3e38..f288702d 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,7 +1,674 @@
-Copyright 2018 Velocity team
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
 
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
 
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+                            Preamble
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
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+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/api/HEADER.txt b/api/HEADER.txt
new file mode 100644
index 00000000..15aa7e2b
--- /dev/null
+++ b/api/HEADER.txt
@@ -0,0 +1,4 @@
+Copyright (C) 2018 Velocity Contributors
+
+The Velocity API is licensed under the terms of the MIT License. For more details,
+reference the LICENSE file in the api top-level directory.
\ No newline at end of file
diff --git a/api/LICENSE b/api/LICENSE
new file mode 100644
index 00000000..3bd76aa5
--- /dev/null
+++ b/api/LICENSE
@@ -0,0 +1,7 @@
+Copyright 2018 Velocity Contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
diff --git a/api/build.gradle b/api/build.gradle
index 23864b6d..273f61ad 100644
--- a/api/build.gradle
+++ b/api/build.gradle
@@ -4,6 +4,7 @@ plugins {
     id 'checkstyle'
 }
 
+apply plugin: 'org.cadixdev.licenser'
 apply from: '../gradle/checkstyle.gradle'
 apply from: '../gradle/publish.gradle'
 apply plugin: 'com.github.johnrengelman.shadow'
@@ -13,6 +14,10 @@ java {
     targetCompatibility = JavaVersion.VERSION_1_8
 }
 
+license {
+    header = project.file('HEADER.txt')
+}
+
 sourceSets {
     ap {
         compileClasspath += main.compileClasspath + main.output
diff --git a/api/src/ap/java/com/velocitypowered/api/plugin/ap/PluginAnnotationProcessor.java b/api/src/ap/java/com/velocitypowered/api/plugin/ap/PluginAnnotationProcessor.java
index eef691ba..6fd77ddf 100644
--- a/api/src/ap/java/com/velocitypowered/api/plugin/ap/PluginAnnotationProcessor.java
+++ b/api/src/ap/java/com/velocitypowered/api/plugin/ap/PluginAnnotationProcessor.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin.ap;
 
 import com.google.gson.Gson;
diff --git a/api/src/ap/java/com/velocitypowered/api/plugin/ap/SerializedPluginDescription.java b/api/src/ap/java/com/velocitypowered/api/plugin/ap/SerializedPluginDescription.java
index 9e0cf7d5..e785d9ad 100644
--- a/api/src/ap/java/com/velocitypowered/api/plugin/ap/SerializedPluginDescription.java
+++ b/api/src/ap/java/com/velocitypowered/api/plugin/ap/SerializedPluginDescription.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin.ap;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/command/BrigadierCommand.java b/api/src/main/java/com/velocitypowered/api/command/BrigadierCommand.java
index edf4d6b2..da40f48a 100644
--- a/api/src/main/java/com/velocitypowered/api/command/BrigadierCommand.java
+++ b/api/src/main/java/com/velocitypowered/api/command/BrigadierCommand.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.command;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/command/Command.java b/api/src/main/java/com/velocitypowered/api/command/Command.java
index 4b017b9c..ea095327 100644
--- a/api/src/main/java/com/velocitypowered/api/command/Command.java
+++ b/api/src/main/java/com/velocitypowered/api/command/Command.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.command;
 
 import com.google.common.collect.ImmutableList;
diff --git a/api/src/main/java/com/velocitypowered/api/command/CommandInvocation.java b/api/src/main/java/com/velocitypowered/api/command/CommandInvocation.java
index 20cc923b..6f3382ed 100644
--- a/api/src/main/java/com/velocitypowered/api/command/CommandInvocation.java
+++ b/api/src/main/java/com/velocitypowered/api/command/CommandInvocation.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.command;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/command/CommandManager.java b/api/src/main/java/com/velocitypowered/api/command/CommandManager.java
index afe9356d..f53a4436 100644
--- a/api/src/main/java/com/velocitypowered/api/command/CommandManager.java
+++ b/api/src/main/java/com/velocitypowered/api/command/CommandManager.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.command;
 
 import com.velocitypowered.api.event.command.CommandExecuteEvent;
diff --git a/api/src/main/java/com/velocitypowered/api/command/CommandMeta.java b/api/src/main/java/com/velocitypowered/api/command/CommandMeta.java
index 65965e0d..d731e6ec 100644
--- a/api/src/main/java/com/velocitypowered/api/command/CommandMeta.java
+++ b/api/src/main/java/com/velocitypowered/api/command/CommandMeta.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.command;
 
 import com.mojang.brigadier.tree.CommandNode;
diff --git a/api/src/main/java/com/velocitypowered/api/command/CommandSource.java b/api/src/main/java/com/velocitypowered/api/command/CommandSource.java
index 2402976c..c3710507 100644
--- a/api/src/main/java/com/velocitypowered/api/command/CommandSource.java
+++ b/api/src/main/java/com/velocitypowered/api/command/CommandSource.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.command;
 
 import com.velocitypowered.api.permission.PermissionSubject;
diff --git a/api/src/main/java/com/velocitypowered/api/command/InvocableCommand.java b/api/src/main/java/com/velocitypowered/api/command/InvocableCommand.java
index 80125f25..e6183e52 100644
--- a/api/src/main/java/com/velocitypowered/api/command/InvocableCommand.java
+++ b/api/src/main/java/com/velocitypowered/api/command/InvocableCommand.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.command;
 
 import com.google.common.collect.ImmutableList;
diff --git a/api/src/main/java/com/velocitypowered/api/command/RawCommand.java b/api/src/main/java/com/velocitypowered/api/command/RawCommand.java
index 4a2dd58b..9ff29126 100644
--- a/api/src/main/java/com/velocitypowered/api/command/RawCommand.java
+++ b/api/src/main/java/com/velocitypowered/api/command/RawCommand.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.command;
 
 import java.util.List;
diff --git a/api/src/main/java/com/velocitypowered/api/command/SimpleCommand.java b/api/src/main/java/com/velocitypowered/api/command/SimpleCommand.java
index 2233e2a9..c51e3396 100644
--- a/api/src/main/java/com/velocitypowered/api/command/SimpleCommand.java
+++ b/api/src/main/java/com/velocitypowered/api/command/SimpleCommand.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.command;
 
 import org.checkerframework.checker.nullness.qual.NonNull;
diff --git a/api/src/main/java/com/velocitypowered/api/command/package-info.java b/api/src/main/java/com/velocitypowered/api/command/package-info.java
index 9d323f55..410f8eac 100644
--- a/api/src/main/java/com/velocitypowered/api/command/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/command/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides a command framework.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/event/EventHandler.java b/api/src/main/java/com/velocitypowered/api/event/EventHandler.java
index f6005cdf..2db7c1fc 100644
--- a/api/src/main/java/com/velocitypowered/api/event/EventHandler.java
+++ b/api/src/main/java/com/velocitypowered/api/event/EventHandler.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/event/EventManager.java b/api/src/main/java/com/velocitypowered/api/event/EventManager.java
index 97ff4e18..6bc15f7e 100644
--- a/api/src/main/java/com/velocitypowered/api/event/EventManager.java
+++ b/api/src/main/java/com/velocitypowered/api/event/EventManager.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event;
 
 import java.util.concurrent.CompletableFuture;
diff --git a/api/src/main/java/com/velocitypowered/api/event/PostOrder.java b/api/src/main/java/com/velocitypowered/api/event/PostOrder.java
index d8923d36..755632cc 100644
--- a/api/src/main/java/com/velocitypowered/api/event/PostOrder.java
+++ b/api/src/main/java/com/velocitypowered/api/event/PostOrder.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/event/ResultedEvent.java b/api/src/main/java/com/velocitypowered/api/event/ResultedEvent.java
index cbc6d273..6a5cbb06 100644
--- a/api/src/main/java/com/velocitypowered/api/event/ResultedEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/ResultedEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/Subscribe.java b/api/src/main/java/com/velocitypowered/api/event/Subscribe.java
index 4e6299d3..18b295fb 100644
--- a/api/src/main/java/com/velocitypowered/api/event/Subscribe.java
+++ b/api/src/main/java/com/velocitypowered/api/event/Subscribe.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event;
 
 import java.lang.annotation.ElementType;
diff --git a/api/src/main/java/com/velocitypowered/api/event/command/CommandExecuteEvent.java b/api/src/main/java/com/velocitypowered/api/event/command/CommandExecuteEvent.java
index b899616d..72ee2f8c 100644
--- a/api/src/main/java/com/velocitypowered/api/event/command/CommandExecuteEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/command/CommandExecuteEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.command;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/command/PlayerAvailableCommandsEvent.java b/api/src/main/java/com/velocitypowered/api/event/command/PlayerAvailableCommandsEvent.java
index ef9939fb..ed006537 100644
--- a/api/src/main/java/com/velocitypowered/api/event/command/PlayerAvailableCommandsEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/command/PlayerAvailableCommandsEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.command;
 
 import static com.google.common.base.Preconditions.checkNotNull;
diff --git a/api/src/main/java/com/velocitypowered/api/event/connection/ConnectionHandshakeEvent.java b/api/src/main/java/com/velocitypowered/api/event/connection/ConnectionHandshakeEvent.java
index 252668be..64ba04b0 100644
--- a/api/src/main/java/com/velocitypowered/api/event/connection/ConnectionHandshakeEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/connection/ConnectionHandshakeEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.connection;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/connection/DisconnectEvent.java b/api/src/main/java/com/velocitypowered/api/event/connection/DisconnectEvent.java
index 5dded164..773a3914 100644
--- a/api/src/main/java/com/velocitypowered/api/event/connection/DisconnectEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/connection/DisconnectEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.connection;
 
 import static com.velocitypowered.api.event.connection.DisconnectEvent.LoginStatus.CANCELLED_BY_PROXY;
diff --git a/api/src/main/java/com/velocitypowered/api/event/connection/LoginEvent.java b/api/src/main/java/com/velocitypowered/api/event/connection/LoginEvent.java
index c204d902..e48e92b0 100644
--- a/api/src/main/java/com/velocitypowered/api/event/connection/LoginEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/connection/LoginEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.connection;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/connection/PluginMessageEvent.java b/api/src/main/java/com/velocitypowered/api/event/connection/PluginMessageEvent.java
index 7f1063b1..917c7097 100644
--- a/api/src/main/java/com/velocitypowered/api/event/connection/PluginMessageEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/connection/PluginMessageEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.connection;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/connection/PostLoginEvent.java b/api/src/main/java/com/velocitypowered/api/event/connection/PostLoginEvent.java
index e9b7d08b..e6a7e37d 100644
--- a/api/src/main/java/com/velocitypowered/api/event/connection/PostLoginEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/connection/PostLoginEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.connection;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/connection/PreLoginEvent.java b/api/src/main/java/com/velocitypowered/api/event/connection/PreLoginEvent.java
index 018e4f2f..b30ed4ca 100644
--- a/api/src/main/java/com/velocitypowered/api/event/connection/PreLoginEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/connection/PreLoginEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.connection;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/connection/package-info.java b/api/src/main/java/com/velocitypowered/api/event/connection/package-info.java
index 8f02c2b1..ed94ee83 100644
--- a/api/src/main/java/com/velocitypowered/api/event/connection/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/event/connection/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides events for handling incoming connections to the proxy and logins.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/event/package-info.java b/api/src/main/java/com/velocitypowered/api/event/package-info.java
index 34819f6b..7fdc617e 100644
--- a/api/src/main/java/com/velocitypowered/api/event/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/event/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides core support for handling events with Velocity. Subpackages include event classes.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/event/permission/PermissionsSetupEvent.java b/api/src/main/java/com/velocitypowered/api/event/permission/PermissionsSetupEvent.java
index f7232a1d..99ba8c84 100644
--- a/api/src/main/java/com/velocitypowered/api/event/permission/PermissionsSetupEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/permission/PermissionsSetupEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.permission;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/permission/package-info.java b/api/src/main/java/com/velocitypowered/api/event/permission/package-info.java
index 402d8db8..9f1eb764 100644
--- a/api/src/main/java/com/velocitypowered/api/event/permission/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/event/permission/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides events to handle setting up permissions for permission subjects.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/GameProfileRequestEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/GameProfileRequestEvent.java
index 4c209056..135de25d 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/GameProfileRequestEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/GameProfileRequestEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/KickedFromServerEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/KickedFromServerEvent.java
index f37560dd..ad4049bd 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/KickedFromServerEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/KickedFromServerEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/PlayerChannelRegisterEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/PlayerChannelRegisterEvent.java
index d9c790ee..21e4efb2 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/PlayerChannelRegisterEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/PlayerChannelRegisterEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/PlayerChatEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/PlayerChatEvent.java
index ef77c96a..2ddcd5e2 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/PlayerChatEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/PlayerChatEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/PlayerChooseInitialServerEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/PlayerChooseInitialServerEvent.java
index 3ff28936..3fc02107 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/PlayerChooseInitialServerEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/PlayerChooseInitialServerEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/PlayerModInfoEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/PlayerModInfoEvent.java
index 8c3065b4..7f3c301e 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/PlayerModInfoEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/PlayerModInfoEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.MoreObjects;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/PlayerResourcePackStatusEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/PlayerResourcePackStatusEvent.java
index 71c2427e..5bffcce8 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/PlayerResourcePackStatusEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/PlayerResourcePackStatusEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/PlayerSettingsChangedEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/PlayerSettingsChangedEvent.java
index fab4cf7f..bff9c5d5 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/PlayerSettingsChangedEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/PlayerSettingsChangedEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.MoreObjects;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/ServerConnectedEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/ServerConnectedEvent.java
index 0609798c..3534133e 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/ServerConnectedEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/ServerConnectedEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/ServerPostConnectEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/ServerPostConnectEvent.java
index e638df49..c3c34eea 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/ServerPostConnectEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/ServerPostConnectEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.annotations.Beta;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/ServerPreConnectEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/ServerPreConnectEvent.java
index 2bcb10bd..04d0538a 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/ServerPreConnectEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/ServerPreConnectEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/TabCompleteEvent.java b/api/src/main/java/com/velocitypowered/api/event/player/TabCompleteEvent.java
index f033d954..14bb6355 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/TabCompleteEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/TabCompleteEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.player;
 
 import static com.google.common.base.Preconditions.checkNotNull;
diff --git a/api/src/main/java/com/velocitypowered/api/event/player/package-info.java b/api/src/main/java/com/velocitypowered/api/event/player/package-info.java
index 1d0513b6..4cada542 100644
--- a/api/src/main/java/com/velocitypowered/api/event/player/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/event/player/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides events for handling actions performed by players.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyInitializeEvent.java b/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyInitializeEvent.java
index 7a439fa8..80c5b840 100644
--- a/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyInitializeEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyInitializeEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.proxy;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyPingEvent.java b/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyPingEvent.java
index f89cfcb7..0df9e665 100644
--- a/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyPingEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyPingEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.proxy;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyReloadEvent.java b/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyReloadEvent.java
index ec1ed1ad..dbbb709f 100644
--- a/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyReloadEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyReloadEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.proxy;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyShutdownEvent.java b/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyShutdownEvent.java
index dc99fde0..49183600 100644
--- a/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyShutdownEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/proxy/ProxyShutdownEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.proxy;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/event/proxy/package-info.java b/api/src/main/java/com/velocitypowered/api/event/proxy/package-info.java
index 3b7aab6b..f18ae5a3 100644
--- a/api/src/main/java/com/velocitypowered/api/event/proxy/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/event/proxy/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides events for handling the lifecycle of the proxy.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/event/query/ProxyQueryEvent.java b/api/src/main/java/com/velocitypowered/api/event/query/ProxyQueryEvent.java
index 721a2f74..2d3cf315 100644
--- a/api/src/main/java/com/velocitypowered/api/event/query/ProxyQueryEvent.java
+++ b/api/src/main/java/com/velocitypowered/api/event/query/ProxyQueryEvent.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.event.query;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/event/query/package-info.java b/api/src/main/java/com/velocitypowered/api/event/query/package-info.java
index 42fb5a47..5f1f08a0 100644
--- a/api/src/main/java/com/velocitypowered/api/event/query/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/event/query/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides events for handling GS4 queries.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/network/ProtocolVersion.java b/api/src/main/java/com/velocitypowered/api/network/ProtocolVersion.java
index b6e3b22e..8b3632f9 100644
--- a/api/src/main/java/com/velocitypowered/api/network/ProtocolVersion.java
+++ b/api/src/main/java/com/velocitypowered/api/network/ProtocolVersion.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.network;
 
 import com.google.common.collect.ImmutableList;
diff --git a/api/src/main/java/com/velocitypowered/api/permission/PermissionFunction.java b/api/src/main/java/com/velocitypowered/api/permission/PermissionFunction.java
index 98f2cc70..7e9f2c85 100644
--- a/api/src/main/java/com/velocitypowered/api/permission/PermissionFunction.java
+++ b/api/src/main/java/com/velocitypowered/api/permission/PermissionFunction.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.permission;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/permission/PermissionProvider.java b/api/src/main/java/com/velocitypowered/api/permission/PermissionProvider.java
index d6fdc507..18f3b7f4 100644
--- a/api/src/main/java/com/velocitypowered/api/permission/PermissionProvider.java
+++ b/api/src/main/java/com/velocitypowered/api/permission/PermissionProvider.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.permission;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/permission/PermissionSubject.java b/api/src/main/java/com/velocitypowered/api/permission/PermissionSubject.java
index 85a7a095..ec7171e9 100644
--- a/api/src/main/java/com/velocitypowered/api/permission/PermissionSubject.java
+++ b/api/src/main/java/com/velocitypowered/api/permission/PermissionSubject.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.permission;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/permission/Tristate.java b/api/src/main/java/com/velocitypowered/api/permission/Tristate.java
index 65df8857..70653eef 100644
--- a/api/src/main/java/com/velocitypowered/api/permission/Tristate.java
+++ b/api/src/main/java/com/velocitypowered/api/permission/Tristate.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.permission;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
diff --git a/api/src/main/java/com/velocitypowered/api/permission/package-info.java b/api/src/main/java/com/velocitypowered/api/permission/package-info.java
index a6825524..7e367ab8 100644
--- a/api/src/main/java/com/velocitypowered/api/permission/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/permission/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides the basic building blocks for a custom permission system.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/Dependency.java b/api/src/main/java/com/velocitypowered/api/plugin/Dependency.java
index c004563d..03412ec1 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/Dependency.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/Dependency.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin;
 
 import java.lang.annotation.Retention;
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/InvalidPluginException.java b/api/src/main/java/com/velocitypowered/api/plugin/InvalidPluginException.java
index ac48c06f..46530ef7 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/InvalidPluginException.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/InvalidPluginException.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin;
 
 public class InvalidPluginException extends Exception {
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/Plugin.java b/api/src/main/java/com/velocitypowered/api/plugin/Plugin.java
index 2ed9970f..04e3d511 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/Plugin.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/Plugin.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin;
 
 import java.lang.annotation.ElementType;
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/PluginContainer.java b/api/src/main/java/com/velocitypowered/api/plugin/PluginContainer.java
index 1c0e8a42..1f6a61b3 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/PluginContainer.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/PluginContainer.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin;
 
 import java.util.Optional;
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/PluginDescription.java b/api/src/main/java/com/velocitypowered/api/plugin/PluginDescription.java
index b5b92527..5d8af646 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/PluginDescription.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/PluginDescription.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin;
 
 import com.google.common.collect.ImmutableList;
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/PluginManager.java b/api/src/main/java/com/velocitypowered/api/plugin/PluginManager.java
index 36ac27cf..7af16566 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/PluginManager.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/PluginManager.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin;
 
 import java.nio.file.Path;
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/annotation/DataDirectory.java b/api/src/main/java/com/velocitypowered/api/plugin/annotation/DataDirectory.java
index c3575cf5..5349204f 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/annotation/DataDirectory.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/annotation/DataDirectory.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin.annotation;
 
 import com.google.inject.BindingAnnotation;
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/annotation/package-info.java b/api/src/main/java/com/velocitypowered/api/plugin/annotation/package-info.java
index 81486dfe..377a036d 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/annotation/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/annotation/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides annotations to handle injecting dependencies for plugins.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/meta/PluginDependency.java b/api/src/main/java/com/velocitypowered/api/plugin/meta/PluginDependency.java
index dc7464a3..9d75eaa4 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/meta/PluginDependency.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/meta/PluginDependency.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.plugin.meta;
 
 import static com.google.common.base.Preconditions.checkArgument;
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/meta/package-info.java b/api/src/main/java/com/velocitypowered/api/plugin/meta/package-info.java
index cde1887a..66b3be09 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/meta/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/meta/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides metadata for plugins.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/plugin/package-info.java b/api/src/main/java/com/velocitypowered/api/plugin/package-info.java
index 6eea17fd..ce6018d7 100644
--- a/api/src/main/java/com/velocitypowered/api/plugin/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/plugin/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides the Velocity plugin API.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/ConnectionRequestBuilder.java b/api/src/main/java/com/velocitypowered/api/proxy/ConnectionRequestBuilder.java
index b163b264..f8fa28b1 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/ConnectionRequestBuilder.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/ConnectionRequestBuilder.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy;
 
 import com.velocitypowered.api.proxy.server.RegisteredServer;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/ConsoleCommandSource.java b/api/src/main/java/com/velocitypowered/api/proxy/ConsoleCommandSource.java
index b48542cc..191b56de 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/ConsoleCommandSource.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/ConsoleCommandSource.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy;
 
 import com.velocitypowered.api.command.CommandSource;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/InboundConnection.java b/api/src/main/java/com/velocitypowered/api/proxy/InboundConnection.java
index 74e84031..b1c47a0f 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/InboundConnection.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/InboundConnection.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/Player.java b/api/src/main/java/com/velocitypowered/api/proxy/Player.java
index e5654a67..d03e532b 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/Player.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/Player.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy;
 
 import com.velocitypowered.api.command.CommandSource;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/ProxyServer.java b/api/src/main/java/com/velocitypowered/api/proxy/ProxyServer.java
index f0b3876a..073cd3bb 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/ProxyServer.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/ProxyServer.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy;
 
 import com.velocitypowered.api.command.CommandManager;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/ServerConnection.java b/api/src/main/java/com/velocitypowered/api/proxy/ServerConnection.java
index 72c93fe5..e725bdce 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/ServerConnection.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/ServerConnection.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy;
 
 import com.velocitypowered.api.proxy.messages.ChannelMessageSink;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/config/ProxyConfig.java b/api/src/main/java/com/velocitypowered/api/proxy/config/ProxyConfig.java
index 3efa22c7..0fa124f7 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/config/ProxyConfig.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/config/ProxyConfig.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.config;
 
 import com.velocitypowered.api.proxy.ProxyServer;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelIdentifier.java b/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelIdentifier.java
index fd3101e7..f8d329db 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelIdentifier.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelIdentifier.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.messages;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSink.java b/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSink.java
index f61c5896..2f826422 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSink.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSink.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.messages;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSource.java b/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSource.java
index 108d082a..cf96af30 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSource.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSource.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.messages;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelRegistrar.java b/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelRegistrar.java
index e1a232b8..197628a2 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelRegistrar.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelRegistrar.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.messages;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/messages/LegacyChannelIdentifier.java b/api/src/main/java/com/velocitypowered/api/proxy/messages/LegacyChannelIdentifier.java
index c9f47103..f5718164 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/messages/LegacyChannelIdentifier.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/messages/LegacyChannelIdentifier.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.messages;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/messages/MinecraftChannelIdentifier.java b/api/src/main/java/com/velocitypowered/api/proxy/messages/MinecraftChannelIdentifier.java
index 2cb66007..08207542 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/messages/MinecraftChannelIdentifier.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/messages/MinecraftChannelIdentifier.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.messages;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/messages/package-info.java b/api/src/main/java/com/velocitypowered/api/proxy/messages/package-info.java
index 75359588..d4323b5c 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/messages/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/messages/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides an interface to receive, handle, and send plugin messages on the proxy from clients and
  * servers.
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/package-info.java b/api/src/main/java/com/velocitypowered/api/proxy/package-info.java
index 3a22511a..c817c3b1 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides an interface to interact with the proxy at a low level.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/player/PlayerSettings.java b/api/src/main/java/com/velocitypowered/api/proxy/player/PlayerSettings.java
index 98d52806..61faae34 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/player/PlayerSettings.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/player/PlayerSettings.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.player;
 
 import java.util.Locale;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/player/SkinParts.java b/api/src/main/java/com/velocitypowered/api/proxy/player/SkinParts.java
index 0a5d0833..e897dd0f 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/player/SkinParts.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/player/SkinParts.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.player;
 
 public final class SkinParts {
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/player/TabList.java b/api/src/main/java/com/velocitypowered/api/proxy/player/TabList.java
index 59d8930b..5f512138 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/player/TabList.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/player/TabList.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.player;
 
 import com.velocitypowered.api.proxy.Player;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/player/TabListEntry.java b/api/src/main/java/com/velocitypowered/api/proxy/player/TabListEntry.java
index 0ae4f574..80b39c46 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/player/TabListEntry.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/player/TabListEntry.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.player;
 
 import com.velocitypowered.api.util.GameProfile;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/player/package-info.java b/api/src/main/java/com/velocitypowered/api/proxy/player/package-info.java
index aa3f7686..248872a3 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/player/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/player/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides an interface to work with players connected to the proxy.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/server/QueryResponse.java b/api/src/main/java/com/velocitypowered/api/proxy/server/QueryResponse.java
index 566dd065..617356c4 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/server/QueryResponse.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/server/QueryResponse.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.server;
 
 import com.google.common.annotations.VisibleForTesting;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/server/RegisteredServer.java b/api/src/main/java/com/velocitypowered/api/proxy/server/RegisteredServer.java
index 16ac4ac2..06cd0634 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/server/RegisteredServer.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/server/RegisteredServer.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.server;
 
 import com.velocitypowered.api.proxy.Player;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/server/ServerInfo.java b/api/src/main/java/com/velocitypowered/api/proxy/server/ServerInfo.java
index 83e5e33e..85dc0466 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/server/ServerInfo.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/server/ServerInfo.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.server;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/server/ServerPing.java b/api/src/main/java/com/velocitypowered/api/proxy/server/ServerPing.java
index dc9b7fc4..0fc4fd49 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/server/ServerPing.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/server/ServerPing.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.server;
 
 import com.google.common.base.MoreObjects;
diff --git a/api/src/main/java/com/velocitypowered/api/proxy/server/package-info.java b/api/src/main/java/com/velocitypowered/api/proxy/server/package-info.java
index 7f902113..eed29b5e 100644
--- a/api/src/main/java/com/velocitypowered/api/proxy/server/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/proxy/server/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides utilities to handle server information.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/scheduler/ScheduledTask.java b/api/src/main/java/com/velocitypowered/api/scheduler/ScheduledTask.java
index 15cdbd14..1d416129 100644
--- a/api/src/main/java/com/velocitypowered/api/scheduler/ScheduledTask.java
+++ b/api/src/main/java/com/velocitypowered/api/scheduler/ScheduledTask.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.scheduler;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/scheduler/Scheduler.java b/api/src/main/java/com/velocitypowered/api/scheduler/Scheduler.java
index 6f850b98..1ff2b8af 100644
--- a/api/src/main/java/com/velocitypowered/api/scheduler/Scheduler.java
+++ b/api/src/main/java/com/velocitypowered/api/scheduler/Scheduler.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.scheduler;
 
 import java.util.concurrent.TimeUnit;
diff --git a/api/src/main/java/com/velocitypowered/api/scheduler/TaskStatus.java b/api/src/main/java/com/velocitypowered/api/scheduler/TaskStatus.java
index 2ec051fe..bd10e9b4 100644
--- a/api/src/main/java/com/velocitypowered/api/scheduler/TaskStatus.java
+++ b/api/src/main/java/com/velocitypowered/api/scheduler/TaskStatus.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.scheduler;
 
 public enum TaskStatus {
diff --git a/api/src/main/java/com/velocitypowered/api/scheduler/package-info.java b/api/src/main/java/com/velocitypowered/api/scheduler/package-info.java
index 15539552..ade4cddd 100644
--- a/api/src/main/java/com/velocitypowered/api/scheduler/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/scheduler/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides utilities for scheduling tasks with a fluent builder.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/util/FastUuidSansHyphens.java b/api/src/main/java/com/velocitypowered/api/util/FastUuidSansHyphens.java
index 158f7e07..feba6046 100644
--- a/api/src/main/java/com/velocitypowered/api/util/FastUuidSansHyphens.java
+++ b/api/src/main/java/com/velocitypowered/api/util/FastUuidSansHyphens.java
@@ -1,25 +1,8 @@
 /*
- * The MIT License (MIT)
+ * Copyright (C) 2018 Velocity Contributors
  *
- * Copyright (c) 2018 Jon Chambers
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
  */
 
 package com.velocitypowered.api.util;
diff --git a/api/src/main/java/com/velocitypowered/api/util/Favicon.java b/api/src/main/java/com/velocitypowered/api/util/Favicon.java
index a3ce2816..62abc845 100644
--- a/api/src/main/java/com/velocitypowered/api/util/Favicon.java
+++ b/api/src/main/java/com/velocitypowered/api/util/Favicon.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/util/GameProfile.java b/api/src/main/java/com/velocitypowered/api/util/GameProfile.java
index 809eb785..0f9f41d1 100644
--- a/api/src/main/java/com/velocitypowered/api/util/GameProfile.java
+++ b/api/src/main/java/com/velocitypowered/api/util/GameProfile.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/util/MessagePosition.java b/api/src/main/java/com/velocitypowered/api/util/MessagePosition.java
index dce7428e..90fd82ba 100644
--- a/api/src/main/java/com/velocitypowered/api/util/MessagePosition.java
+++ b/api/src/main/java/com/velocitypowered/api/util/MessagePosition.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/util/ModInfo.java b/api/src/main/java/com/velocitypowered/api/util/ModInfo.java
index ac1bd008..8a2dea74 100644
--- a/api/src/main/java/com/velocitypowered/api/util/ModInfo.java
+++ b/api/src/main/java/com/velocitypowered/api/util/ModInfo.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/util/ProxyVersion.java b/api/src/main/java/com/velocitypowered/api/util/ProxyVersion.java
index 59d31a90..22f0e571 100644
--- a/api/src/main/java/com/velocitypowered/api/util/ProxyVersion.java
+++ b/api/src/main/java/com/velocitypowered/api/util/ProxyVersion.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/util/UuidUtils.java b/api/src/main/java/com/velocitypowered/api/util/UuidUtils.java
index dfe05af1..ac0de4fa 100644
--- a/api/src/main/java/com/velocitypowered/api/util/UuidUtils.java
+++ b/api/src/main/java/com/velocitypowered/api/util/UuidUtils.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
diff --git a/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBar.java b/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBar.java
index 115652d4..cfcc78b1 100644
--- a/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBar.java
+++ b/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBar.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util.bossbar;
 
 import com.velocitypowered.api.proxy.Player;
diff --git a/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarColor.java b/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarColor.java
index 5cb66dfc..ce9addd9 100644
--- a/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarColor.java
+++ b/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarColor.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util.bossbar;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarFlag.java b/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarFlag.java
index 3a8fde2a..0e800175 100644
--- a/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarFlag.java
+++ b/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarFlag.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util.bossbar;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarOverlay.java b/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarOverlay.java
index 61d92d9d..5aea64c1 100644
--- a/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarOverlay.java
+++ b/api/src/main/java/com/velocitypowered/api/util/bossbar/BossBarOverlay.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util.bossbar;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/util/package-info.java b/api/src/main/java/com/velocitypowered/api/util/package-info.java
index ef28b662..c26f70e7 100644
--- a/api/src/main/java/com/velocitypowered/api/util/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/util/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides a selection of miscellaneous utilities for use by plugins and the proxy.
  */
diff --git a/api/src/main/java/com/velocitypowered/api/util/title/TextTitle.java b/api/src/main/java/com/velocitypowered/api/util/title/TextTitle.java
index 9580e9a8..8fee20cf 100644
--- a/api/src/main/java/com/velocitypowered/api/util/title/TextTitle.java
+++ b/api/src/main/java/com/velocitypowered/api/util/title/TextTitle.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util.title;
 
 import com.google.common.base.MoreObjects;
diff --git a/api/src/main/java/com/velocitypowered/api/util/title/Title.java b/api/src/main/java/com/velocitypowered/api/util/title/Title.java
index e95c6f1a..3f56dcd2 100644
--- a/api/src/main/java/com/velocitypowered/api/util/title/Title.java
+++ b/api/src/main/java/com/velocitypowered/api/util/title/Title.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util.title;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/util/title/Titles.java b/api/src/main/java/com/velocitypowered/api/util/title/Titles.java
index 444e4101..3f3190eb 100644
--- a/api/src/main/java/com/velocitypowered/api/util/title/Titles.java
+++ b/api/src/main/java/com/velocitypowered/api/util/title/Titles.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util.title;
 
 /**
diff --git a/api/src/main/java/com/velocitypowered/api/util/title/package-info.java b/api/src/main/java/com/velocitypowered/api/util/title/package-info.java
index e77c9e98..3fefd59c 100644
--- a/api/src/main/java/com/velocitypowered/api/util/title/package-info.java
+++ b/api/src/main/java/com/velocitypowered/api/util/title/package-info.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 /**
  * Provides data structures for creating and manipulating titles.
  *
diff --git a/api/src/test/java/com/velocitypowered/api/proxy/messages/MinecraftChannelIdentifierTest.java b/api/src/test/java/com/velocitypowered/api/proxy/messages/MinecraftChannelIdentifierTest.java
index e7f02e95..17e6e499 100644
--- a/api/src/test/java/com/velocitypowered/api/proxy/messages/MinecraftChannelIdentifierTest.java
+++ b/api/src/test/java/com/velocitypowered/api/proxy/messages/MinecraftChannelIdentifierTest.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.messages;
 
 import static com.velocitypowered.api.proxy.messages.MinecraftChannelIdentifier.create;
diff --git a/api/src/test/java/com/velocitypowered/api/proxy/server/QueryResponseTest.java b/api/src/test/java/com/velocitypowered/api/proxy/server/QueryResponseTest.java
index c7222a06..b7b91288 100644
--- a/api/src/test/java/com/velocitypowered/api/proxy/server/QueryResponseTest.java
+++ b/api/src/test/java/com/velocitypowered/api/proxy/server/QueryResponseTest.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.server;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/api/src/test/java/com/velocitypowered/api/proxy/server/ServerPingTest.java b/api/src/test/java/com/velocitypowered/api/proxy/server/ServerPingTest.java
index 76caaa3a..e5ac0db5 100644
--- a/api/src/test/java/com/velocitypowered/api/proxy/server/ServerPingTest.java
+++ b/api/src/test/java/com/velocitypowered/api/proxy/server/ServerPingTest.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.proxy.server;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/api/src/test/java/com/velocitypowered/api/util/UuidUtilsTest.java b/api/src/test/java/com/velocitypowered/api/util/UuidUtilsTest.java
index b6b37620..6f467e7c 100644
--- a/api/src/test/java/com/velocitypowered/api/util/UuidUtilsTest.java
+++ b/api/src/test/java/com/velocitypowered/api/util/UuidUtilsTest.java
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
 package com.velocitypowered.api.util;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/build.gradle b/build.gradle
index ba3a02ac..a1395e47 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,6 +10,7 @@ buildscript {
 plugins {
     id 'java'
     id "com.github.spotbugs" version "4.2.4" apply false
+    id 'org.cadixdev.licenser' version '0.5.1' apply false
 }
 
 allprojects {
diff --git a/native/build.gradle b/native/build.gradle
index b5b26048..03f7f242 100644
--- a/native/build.gradle
+++ b/native/build.gradle
@@ -4,6 +4,7 @@ plugins {
     id 'maven-publish'
 }
 
+apply plugin: 'org.cadixdev.licenser'
 apply from: '../gradle/checkstyle.gradle'
 apply from: '../gradle/publish.gradle'
 
@@ -12,6 +13,10 @@ java {
     targetCompatibility = JavaVersion.VERSION_1_8
 }
 
+license {
+    header = project.rootProject.file('HEADER.txt')
+}
+
 dependencies {
     implementation "com.google.guava:guava:${guavaVersion}"
     implementation "io.netty:netty-handler:${nettyVersion}"
diff --git a/native/src/main/java/com/velocitypowered/natives/Disposable.java b/native/src/main/java/com/velocitypowered/natives/Disposable.java
index 16952d91..dc203112 100644
--- a/native/src/main/java/com/velocitypowered/natives/Disposable.java
+++ b/native/src/main/java/com/velocitypowered/natives/Disposable.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives;
 
 import java.io.Closeable;
diff --git a/native/src/main/java/com/velocitypowered/natives/Native.java b/native/src/main/java/com/velocitypowered/natives/Native.java
index e90ccf80..f1bf323d 100644
--- a/native/src/main/java/com/velocitypowered/natives/Native.java
+++ b/native/src/main/java/com/velocitypowered/natives/Native.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives;
 
 import com.velocitypowered.natives.util.BufferPreference;
diff --git a/native/src/main/java/com/velocitypowered/natives/NativeSetupException.java b/native/src/main/java/com/velocitypowered/natives/NativeSetupException.java
index ff668163..72ce89d0 100644
--- a/native/src/main/java/com/velocitypowered/natives/NativeSetupException.java
+++ b/native/src/main/java/com/velocitypowered/natives/NativeSetupException.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives;
 
 public class NativeSetupException extends RuntimeException {
diff --git a/native/src/main/java/com/velocitypowered/natives/compression/CompressorUtils.java b/native/src/main/java/com/velocitypowered/natives/compression/CompressorUtils.java
index e31c6b5d..fdde8d32 100644
--- a/native/src/main/java/com/velocitypowered/natives/compression/CompressorUtils.java
+++ b/native/src/main/java/com/velocitypowered/natives/compression/CompressorUtils.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.compression;
 
 import io.netty.buffer.ByteBuf;
diff --git a/native/src/main/java/com/velocitypowered/natives/compression/Java11VelocityCompressor.java b/native/src/main/java/com/velocitypowered/natives/compression/Java11VelocityCompressor.java
index 49ac1da2..be3ed64e 100644
--- a/native/src/main/java/com/velocitypowered/natives/compression/Java11VelocityCompressor.java
+++ b/native/src/main/java/com/velocitypowered/natives/compression/Java11VelocityCompressor.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.compression;
 
 import static com.google.common.base.Preconditions.checkArgument;
diff --git a/native/src/main/java/com/velocitypowered/natives/compression/JavaVelocityCompressor.java b/native/src/main/java/com/velocitypowered/natives/compression/JavaVelocityCompressor.java
index d5ad754b..97127d25 100644
--- a/native/src/main/java/com/velocitypowered/natives/compression/JavaVelocityCompressor.java
+++ b/native/src/main/java/com/velocitypowered/natives/compression/JavaVelocityCompressor.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.compression;
 
 import static com.velocitypowered.natives.compression.CompressorUtils.ZLIB_BUFFER_SIZE;
diff --git a/native/src/main/java/com/velocitypowered/natives/compression/LibdeflateVelocityCompressor.java b/native/src/main/java/com/velocitypowered/natives/compression/LibdeflateVelocityCompressor.java
index ac48b357..aedb221c 100644
--- a/native/src/main/java/com/velocitypowered/natives/compression/LibdeflateVelocityCompressor.java
+++ b/native/src/main/java/com/velocitypowered/natives/compression/LibdeflateVelocityCompressor.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.compression;
 
 import com.google.common.base.Preconditions;
diff --git a/native/src/main/java/com/velocitypowered/natives/compression/NativeZlibDeflate.java b/native/src/main/java/com/velocitypowered/natives/compression/NativeZlibDeflate.java
index 83cdc5cd..e08922d0 100644
--- a/native/src/main/java/com/velocitypowered/natives/compression/NativeZlibDeflate.java
+++ b/native/src/main/java/com/velocitypowered/natives/compression/NativeZlibDeflate.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.compression;
 
 /**
diff --git a/native/src/main/java/com/velocitypowered/natives/compression/NativeZlibInflate.java b/native/src/main/java/com/velocitypowered/natives/compression/NativeZlibInflate.java
index 1c6c4259..df793bba 100644
--- a/native/src/main/java/com/velocitypowered/natives/compression/NativeZlibInflate.java
+++ b/native/src/main/java/com/velocitypowered/natives/compression/NativeZlibInflate.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.compression;
 
 import java.util.zip.DataFormatException;
diff --git a/native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressor.java b/native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressor.java
index 09cad102..602eb884 100644
--- a/native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressor.java
+++ b/native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressor.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.compression;
 
 import com.velocitypowered.natives.Disposable;
diff --git a/native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressorFactory.java b/native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressorFactory.java
index dda60f76..dac8ed4a 100644
--- a/native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressorFactory.java
+++ b/native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressorFactory.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.compression;
 
 public interface VelocityCompressorFactory {
diff --git a/native/src/main/java/com/velocitypowered/natives/encryption/JavaVelocityCipher.java b/native/src/main/java/com/velocitypowered/natives/encryption/JavaVelocityCipher.java
index a1a65954..220f39d8 100644
--- a/native/src/main/java/com/velocitypowered/natives/encryption/JavaVelocityCipher.java
+++ b/native/src/main/java/com/velocitypowered/natives/encryption/JavaVelocityCipher.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.encryption;
 
 import com.google.common.base.Preconditions;
diff --git a/native/src/main/java/com/velocitypowered/natives/encryption/NativeVelocityCipher.java b/native/src/main/java/com/velocitypowered/natives/encryption/NativeVelocityCipher.java
index 814971c4..26319e39 100644
--- a/native/src/main/java/com/velocitypowered/natives/encryption/NativeVelocityCipher.java
+++ b/native/src/main/java/com/velocitypowered/natives/encryption/NativeVelocityCipher.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.encryption;
 
 import com.google.common.base.Preconditions;
diff --git a/native/src/main/java/com/velocitypowered/natives/encryption/OpenSslCipherImpl.java b/native/src/main/java/com/velocitypowered/natives/encryption/OpenSslCipherImpl.java
index f97eef3d..ecca455b 100644
--- a/native/src/main/java/com/velocitypowered/natives/encryption/OpenSslCipherImpl.java
+++ b/native/src/main/java/com/velocitypowered/natives/encryption/OpenSslCipherImpl.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.encryption;
 
 import java.security.GeneralSecurityException;
diff --git a/native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipher.java b/native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipher.java
index d5a161a9..c62a70b2 100644
--- a/native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipher.java
+++ b/native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipher.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.encryption;
 
 import com.velocitypowered.natives.Disposable;
diff --git a/native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipherFactory.java b/native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipherFactory.java
index 8ce83a1b..ec6b830f 100644
--- a/native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipherFactory.java
+++ b/native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipherFactory.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.encryption;
 
 import java.security.GeneralSecurityException;
diff --git a/native/src/main/java/com/velocitypowered/natives/util/BufferPreference.java b/native/src/main/java/com/velocitypowered/natives/util/BufferPreference.java
index 6814b11f..c728bfb9 100644
--- a/native/src/main/java/com/velocitypowered/natives/util/BufferPreference.java
+++ b/native/src/main/java/com/velocitypowered/natives/util/BufferPreference.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.util;
 
 public enum BufferPreference {
diff --git a/native/src/main/java/com/velocitypowered/natives/util/MoreByteBufUtils.java b/native/src/main/java/com/velocitypowered/natives/util/MoreByteBufUtils.java
index dd41e3fc..20450221 100644
--- a/native/src/main/java/com/velocitypowered/natives/util/MoreByteBufUtils.java
+++ b/native/src/main/java/com/velocitypowered/natives/util/MoreByteBufUtils.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.util;
 
 import com.velocitypowered.natives.Native;
diff --git a/native/src/main/java/com/velocitypowered/natives/util/NativeCodeLoader.java b/native/src/main/java/com/velocitypowered/natives/util/NativeCodeLoader.java
index e4da84f7..58175e77 100644
--- a/native/src/main/java/com/velocitypowered/natives/util/NativeCodeLoader.java
+++ b/native/src/main/java/com/velocitypowered/natives/util/NativeCodeLoader.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.util;
 
 import java.util.List;
diff --git a/native/src/main/java/com/velocitypowered/natives/util/NativeConstraints.java b/native/src/main/java/com/velocitypowered/natives/util/NativeConstraints.java
index 4bc6d671..e42bcfb9 100644
--- a/native/src/main/java/com/velocitypowered/natives/util/NativeConstraints.java
+++ b/native/src/main/java/com/velocitypowered/natives/util/NativeConstraints.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.util;
 
 import io.netty.buffer.ByteBuf;
diff --git a/native/src/main/java/com/velocitypowered/natives/util/Natives.java b/native/src/main/java/com/velocitypowered/natives/util/Natives.java
index 24ff3447..b99e24b4 100644
--- a/native/src/main/java/com/velocitypowered/natives/util/Natives.java
+++ b/native/src/main/java/com/velocitypowered/natives/util/Natives.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.util;
 
 import com.google.common.collect.ImmutableList;
diff --git a/native/src/test/java/com/velocitypowered/natives/compression/VelocityCompressorTest.java b/native/src/test/java/com/velocitypowered/natives/compression/VelocityCompressorTest.java
index e8ff18f8..af4d5abb 100644
--- a/native/src/test/java/com/velocitypowered/natives/compression/VelocityCompressorTest.java
+++ b/native/src/test/java/com/velocitypowered/natives/compression/VelocityCompressorTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.compression;
 
 import static org.junit.jupiter.api.Assertions.assertThrows;
diff --git a/native/src/test/java/com/velocitypowered/natives/encryption/VelocityCipherTest.java b/native/src/test/java/com/velocitypowered/natives/encryption/VelocityCipherTest.java
index 7fe7e777..6143d8d1 100644
--- a/native/src/test/java/com/velocitypowered/natives/encryption/VelocityCipherTest.java
+++ b/native/src/test/java/com/velocitypowered/natives/encryption/VelocityCipherTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.natives.encryption;
 
 import static org.junit.jupiter.api.Assertions.assertTrue;
diff --git a/proxy/build.gradle b/proxy/build.gradle
index 8773a085..33fa5bb4 100644
--- a/proxy/build.gradle
+++ b/proxy/build.gradle
@@ -5,9 +5,14 @@ plugins {
     id 'checkstyle'
 }
 
+apply plugin: 'org.cadixdev.licenser'
 apply from: '../gradle/checkstyle.gradle'
 apply plugin: 'com.github.johnrengelman.shadow'
 
+license {
+    header = project.rootProject.file('HEADER.txt')
+}
+
 java {
     sourceCompatibility = JavaVersion.VERSION_1_8
     targetCompatibility = JavaVersion.VERSION_1_8
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/Metrics.java b/proxy/src/main/java/com/velocitypowered/proxy/Metrics.java
index 5728ca67..64addd7a 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/Metrics.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/Metrics.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy;
 
 import com.velocitypowered.proxy.config.VelocityConfiguration;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/ProxyOptions.java b/proxy/src/main/java/com/velocitypowered/proxy/ProxyOptions.java
index 30a617b9..c80b471a 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/ProxyOptions.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/ProxyOptions.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy;
 
 import java.io.IOException;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/Velocity.java b/proxy/src/main/java/com/velocitypowered/proxy/Velocity.java
index 619cb4a0..2362a4df 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/Velocity.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/Velocity.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy;
 
 import io.netty.util.ResourceLeakDetector;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/VelocityServer.java b/proxy/src/main/java/com/velocitypowered/proxy/VelocityServer.java
index 12564cd9..63b3b755 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/VelocityServer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/VelocityServer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy;
 
 import com.google.common.base.MoreObjects;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/AbstractCommandInvocation.java b/proxy/src/main/java/com/velocitypowered/proxy/command/AbstractCommandInvocation.java
index 1a1d3000..87bd8e49 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/AbstractCommandInvocation.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/AbstractCommandInvocation.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/CommandInvocationFactory.java b/proxy/src/main/java/com/velocitypowered/proxy/command/CommandInvocationFactory.java
index febfce29..05a4d3b9 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/CommandInvocationFactory.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/CommandInvocationFactory.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command;
 
 import com.mojang.brigadier.context.CommandContext;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/CommandNodeFactory.java b/proxy/src/main/java/com/velocitypowered/proxy/command/CommandNodeFactory.java
index 0229a43e..8146ff9d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/CommandNodeFactory.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/CommandNodeFactory.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command;
 
 import com.mojang.brigadier.context.CommandContext;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandManager.java b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandManager.java
index f8adfc2e..349bf2ed 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandManager.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandManager.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandMeta.java b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandMeta.java
index b7a9715c..c45b5108 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandMeta.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommandMeta.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityRawCommandInvocation.java b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityRawCommandInvocation.java
index 652e71c9..3e41c443 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityRawCommandInvocation.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocityRawCommandInvocation.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocitySimpleCommandInvocation.java b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocitySimpleCommandInvocation.java
index 55b16c5a..74d851c8 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/VelocitySimpleCommandInvocation.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/VelocitySimpleCommandInvocation.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command;
 
 import com.mojang.brigadier.context.CommandContext;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/BuiltinCommandUtil.java b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/BuiltinCommandUtil.java
index 14868b84..60edb880 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/BuiltinCommandUtil.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/BuiltinCommandUtil.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command.builtin;
 
 import com.velocitypowered.api.proxy.ProxyServer;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/GlistCommand.java b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/GlistCommand.java
index ca1677a9..7ae7d481 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/GlistCommand.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/GlistCommand.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command.builtin;
 
 import static com.mojang.brigadier.arguments.StringArgumentType.getString;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/ServerCommand.java b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/ServerCommand.java
index 145f914b..3f3cd23d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/ServerCommand.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/ServerCommand.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command.builtin;
 
 import static net.kyori.adventure.text.event.HoverEvent.showText;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/ShutdownCommand.java b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/ShutdownCommand.java
index 4440161f..47394384 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/ShutdownCommand.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/ShutdownCommand.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command.builtin;
 
 import com.velocitypowered.api.command.RawCommand;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/VelocityCommand.java b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/VelocityCommand.java
index 3297f457..f4b98881 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/VelocityCommand.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/command/builtin/VelocityCommand.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command.builtin;
 
 import com.google.common.base.Joiner;
@@ -211,8 +228,8 @@ public class VelocityCommand implements SimpleCommand {
           .append(Component.text(version.getVersion()).decoration(TextDecoration.BOLD, false))
           .build();
       TextComponent copyright = Component
-          .text("Copyright 2018-2021 " + version.getVendor() + ". " + version.getName()
-              + " is freely licensed under the terms of the MIT License.");
+          .text("Copyright 2018-2020 " + version.getVendor() + ". " + version.getName()
+              + " is licensed under the terms of the GNU General Public License v3.");
       source.sendMessage(Identity.nil(), velocity);
       source.sendMessage(Identity.nil(), copyright);
 
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/config/PingPassthroughMode.java b/proxy/src/main/java/com/velocitypowered/proxy/config/PingPassthroughMode.java
index 1ef700f5..1c28a4c2 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/config/PingPassthroughMode.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/config/PingPassthroughMode.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.config;
 
 public enum PingPassthroughMode {
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/config/PlayerInfoForwarding.java b/proxy/src/main/java/com/velocitypowered/proxy/config/PlayerInfoForwarding.java
index 908a26a3..6adb0655 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/config/PlayerInfoForwarding.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/config/PlayerInfoForwarding.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.config;
 
 public enum PlayerInfoForwarding {
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/config/VelocityConfiguration.java b/proxy/src/main/java/com/velocitypowered/proxy/config/VelocityConfiguration.java
index fa455e88..95792ded 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/config/VelocityConfiguration.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/config/VelocityConfiguration.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.config;
 
 import com.electronwill.nightconfig.core.CommentedConfig;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/ConnectionType.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/ConnectionType.java
index b6d5fc75..4820ce68 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/ConnectionType.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/ConnectionType.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection;
 
 import com.velocitypowered.api.util.GameProfile;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/ConnectionTypes.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/ConnectionTypes.java
index 150ab816..6f5ece08 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/ConnectionTypes.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/ConnectionTypes.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection;
 
 import com.velocitypowered.proxy.connection.backend.BackendConnectionPhases;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java
index 42b3a766..4d631896 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection;
 
 import static com.velocitypowered.proxy.network.Connections.CIPHER_DECODER;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnectionAssociation.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnectionAssociation.java
index d28e3be4..0bee34ef 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnectionAssociation.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnectionAssociation.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection;
 
 public interface MinecraftConnectionAssociation {
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftSessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftSessionHandler.java
index 297e5f88..3dcb3807 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftSessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftSessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection;
 
 import com.velocitypowered.proxy.protocol.MinecraftPacket;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/VelocityConstants.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/VelocityConstants.java
index 665cd5c6..79839e89 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/VelocityConstants.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/VelocityConstants.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection;
 
 public class VelocityConstants {
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendConnectionPhase.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendConnectionPhase.java
index f7fe7aca..24a808b0 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendConnectionPhase.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendConnectionPhase.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.backend;
 
 import com.velocitypowered.proxy.connection.client.ConnectedPlayer;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendConnectionPhases.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendConnectionPhases.java
index 09d17053..3fb42348 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendConnectionPhases.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendConnectionPhases.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.backend;
 
 import com.velocitypowered.proxy.connection.client.ConnectedPlayer;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendPlaySessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendPlaySessionHandler.java
index b396799d..d649b4c0 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendPlaySessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BackendPlaySessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.backend;
 
 import static com.velocitypowered.proxy.connection.backend.BungeeCordMessageResponder.getBungeeCordChannel;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BungeeCordMessageResponder.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BungeeCordMessageResponder.java
index 1a028905..c55cb6cf 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BungeeCordMessageResponder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/BungeeCordMessageResponder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.backend;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/LoginSessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/LoginSessionHandler.java
index 80e6bd7c..19643031 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/LoginSessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/LoginSessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.backend;
 
 import com.velocitypowered.api.util.GameProfile;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/TransitionSessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/TransitionSessionHandler.java
index f127abe2..3ba2fd21 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/TransitionSessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/TransitionSessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.backend;
 
 import static com.velocitypowered.proxy.connection.backend.BackendConnectionPhases.IN_TRANSITION;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/VelocityServerConnection.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/VelocityServerConnection.java
index cf70bf5a..62be4a34 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/VelocityServerConnection.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/backend/VelocityServerConnection.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.backend;
 
 import static com.velocitypowered.proxy.VelocityServer.GENERAL_GSON;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientConnectionPhase.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientConnectionPhase.java
index ba45251a..b0ee83b3 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientConnectionPhase.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientConnectionPhase.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import com.velocitypowered.proxy.connection.backend.VelocityServerConnection;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientConnectionPhases.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientConnectionPhases.java
index 874e0f4b..934dae0a 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientConnectionPhases.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientConnectionPhases.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 /**
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientPlaySessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientPlaySessionHandler.java
index 2f037557..8ac39750 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientPlaySessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientPlaySessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import static com.velocitypowered.api.network.ProtocolVersion.MINECRAFT_1_13;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientSettingsWrapper.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientSettingsWrapper.java
index a0d349db..b268ee19 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientSettingsWrapper.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientSettingsWrapper.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import com.velocitypowered.api.proxy.player.PlayerSettings;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ConnectedPlayer.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ConnectedPlayer.java
index 3cc40dfc..2c7aa7e8 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ConnectedPlayer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ConnectedPlayer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import static com.velocitypowered.api.proxy.ConnectionRequestBuilder.Status.ALREADY_CONNECTED;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/HandshakeSessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/HandshakeSessionHandler.java
index 63218158..2ce8f8db 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/HandshakeSessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/HandshakeSessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import com.google.common.annotations.VisibleForTesting;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/InitialConnectSessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/InitialConnectSessionHandler.java
index 188ae353..8dcc5c04 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/InitialConnectSessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/InitialConnectSessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import com.velocitypowered.proxy.connection.MinecraftSessionHandler;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/InitialInboundConnection.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/InitialInboundConnection.java
index 7b529569..8f5e9da6 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/InitialInboundConnection.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/InitialInboundConnection.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/LoginSessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/LoginSessionHandler.java
index a21f98d0..230d50d5 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/LoginSessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/LoginSessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import static com.google.common.net.UrlEscapers.urlFormParameterEscaper;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/StatusSessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/StatusSessionHandler.java
index 70b54f7b..d17a419d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/StatusSessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/StatusSessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import com.google.common.collect.ImmutableList;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeConnectionType.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeConnectionType.java
index 544680bc..5e063b28 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeConnectionType.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeConnectionType.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.forge.legacy;
 
 import com.velocitypowered.api.util.GameProfile;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeConstants.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeConstants.java
index 1a932c4f..7dff8855 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeConstants.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeConstants.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.forge.legacy;
 
 /**
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeHandshakeBackendPhase.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeHandshakeBackendPhase.java
index 5dc381f2..ed435011 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeHandshakeBackendPhase.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeHandshakeBackendPhase.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.forge.legacy;
 
 import com.velocitypowered.proxy.connection.ConnectionTypes;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeHandshakeClientPhase.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeHandshakeClientPhase.java
index da4096ca..3bb1510f 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeHandshakeClientPhase.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeHandshakeClientPhase.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.forge.legacy;
 
 import com.velocitypowered.api.util.ModInfo;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeUtil.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeUtil.java
index e43847eb..f541c789 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeUtil.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/forge/legacy/LegacyForgeUtil.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.forge.legacy;
 
 import static com.velocitypowered.proxy.connection.forge.legacy.LegacyForgeConstants.FORGE_LEGACY_HANDSHAKE_CHANNEL;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionData.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionData.java
index 234bb28e..406bce93 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionData.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionData.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.registry;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionInfo.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionInfo.java
index 54c833d1..8c7abd8c 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionInfo.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionInfo.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.registry;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionRegistry.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionRegistry.java
index 36a902b6..4e7fb52a 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionRegistry.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionRegistry.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.registry;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionMessages.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionMessages.java
index 50c9f3e8..bbb6c2da 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionMessages.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionMessages.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.util;
 
 import net.kyori.adventure.text.Component;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionRequestResults.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionRequestResults.java
index ce97458d..2853aead 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionRequestResults.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionRequestResults.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.util;
 
 import com.velocitypowered.api.proxy.ConnectionRequestBuilder;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionTypeImpl.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionTypeImpl.java
index 123f1c64..38735283 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionTypeImpl.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionTypeImpl.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.util;
 
 import com.velocitypowered.api.util.GameProfile;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/console/VelocityConsole.java b/proxy/src/main/java/com/velocitypowered/proxy/console/VelocityConsole.java
index f17b1025..6b465193 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/console/VelocityConsole.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/console/VelocityConsole.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.console;
 
 import static com.velocitypowered.api.permission.PermissionFunction.ALWAYS_TRUE;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/network/BackendChannelInitializer.java b/proxy/src/main/java/com/velocitypowered/proxy/network/BackendChannelInitializer.java
index b6cff860..a862ddf7 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/network/BackendChannelInitializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/network/BackendChannelInitializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.network;
 
 import static com.velocitypowered.proxy.network.Connections.FLOW_HANDLER;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/network/BackendChannelInitializerHolder.java b/proxy/src/main/java/com/velocitypowered/proxy/network/BackendChannelInitializerHolder.java
index 7da1ab32..8d667ffa 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/network/BackendChannelInitializerHolder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/network/BackendChannelInitializerHolder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.network;
 
 import io.netty.channel.Channel;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/network/ConnectionManager.java b/proxy/src/main/java/com/velocitypowered/proxy/network/ConnectionManager.java
index c5408fc6..9a402162 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/network/ConnectionManager.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/network/ConnectionManager.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.network;
 
 import static org.asynchttpclient.Dsl.asyncHttpClient;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/network/Connections.java b/proxy/src/main/java/com/velocitypowered/proxy/network/Connections.java
index 33112a08..1e0fae2d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/network/Connections.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/network/Connections.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.network;
 
 public class Connections {
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/network/ServerChannelInitializer.java b/proxy/src/main/java/com/velocitypowered/proxy/network/ServerChannelInitializer.java
index 64d2ec83..2c27b3fb 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/network/ServerChannelInitializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/network/ServerChannelInitializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.network;
 
 import static com.velocitypowered.proxy.network.Connections.FRAME_DECODER;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/network/ServerChannelInitializerHolder.java b/proxy/src/main/java/com/velocitypowered/proxy/network/ServerChannelInitializerHolder.java
index c9b2a772..ab125cc8 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/network/ServerChannelInitializerHolder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/network/ServerChannelInitializerHolder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.network;
 
 import io.netty.channel.Channel;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/network/TransportType.java b/proxy/src/main/java/com/velocitypowered/proxy/network/TransportType.java
index d241267b..1082d1e9 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/network/TransportType.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/network/TransportType.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.network;
 
 import com.velocitypowered.proxy.util.concurrent.VelocityNettyThreadFactory;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/network/netty/SeparatePoolInetNameResolver.java b/proxy/src/main/java/com/velocitypowered/proxy/network/netty/SeparatePoolInetNameResolver.java
index 75e03d5f..a92fa318 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/network/netty/SeparatePoolInetNameResolver.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/network/netty/SeparatePoolInetNameResolver.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.network.netty;
 
 import com.google.common.cache.Cache;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/PluginClassLoader.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/PluginClassLoader.java
index 85908ecb..bf590338 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/PluginClassLoader.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/PluginClassLoader.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin;
 
 import java.io.IOException;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/VelocityEventManager.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/VelocityEventManager.java
index 5d0d5855..70736c30 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/VelocityEventManager.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/VelocityEventManager.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/VelocityPluginManager.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/VelocityPluginManager.java
index bd84db59..682d5bc7 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/VelocityPluginManager.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/VelocityPluginManager.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin;
 
 import static com.google.common.base.Preconditions.checkArgument;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/PluginLoader.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/PluginLoader.java
index 560f177e..5c108722 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/PluginLoader.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/PluginLoader.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin.loader;
 
 import com.google.inject.Module;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/VelocityPluginContainer.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/VelocityPluginContainer.java
index 1a20bddc..6c07ac3f 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/VelocityPluginContainer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/VelocityPluginContainer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin.loader;
 
 import com.velocitypowered.api.plugin.PluginContainer;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/VelocityPluginDescription.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/VelocityPluginDescription.java
index 41f0d915..b799dbbf 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/VelocityPluginDescription.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/VelocityPluginDescription.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin.loader;
 
 import static com.google.common.base.Preconditions.checkNotNull;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaPluginLoader.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaPluginLoader.java
index b1ac74d9..a3043a93 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaPluginLoader.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaPluginLoader.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin.loader.java;
 
 import com.google.inject.Guice;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaVelocityPluginDescription.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaVelocityPluginDescription.java
index 3a775991..0fae80b0 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaVelocityPluginDescription.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaVelocityPluginDescription.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin.loader.java;
 
 import static com.google.common.base.Preconditions.checkNotNull;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaVelocityPluginDescriptionCandidate.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaVelocityPluginDescriptionCandidate.java
index a5d6d0a1..4e4aa306 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaVelocityPluginDescriptionCandidate.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/JavaVelocityPluginDescriptionCandidate.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin.loader.java;
 
 import static com.google.common.base.Preconditions.checkNotNull;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/VelocityPluginModule.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/VelocityPluginModule.java
index 77e944ac..2e8bd6eb 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/VelocityPluginModule.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/loader/java/VelocityPluginModule.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin.loader.java;
 
 import com.google.inject.Binder;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/plugin/util/PluginDependencyUtils.java b/proxy/src/main/java/com/velocitypowered/proxy/plugin/util/PluginDependencyUtils.java
index e09cc5be..a4c45b15 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/plugin/util/PluginDependencyUtils.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/plugin/util/PluginDependencyUtils.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin.util;
 
 import com.google.common.collect.Maps;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/MinecraftPacket.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/MinecraftPacket.java
index e7baaecb..7115bb8b 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/MinecraftPacket.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/MinecraftPacket.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/ProtocolUtils.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/ProtocolUtils.java
index ef6eb35c..50f6c48d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/ProtocolUtils.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/ProtocolUtils.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol;
 
 import static com.google.common.base.Preconditions.checkArgument;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/StateRegistry.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/StateRegistry.java
index ada663f9..87bc5d09 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/StateRegistry.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/StateRegistry.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol;
 
 import static com.google.common.collect.Iterables.getLast;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/AutoReadHolderHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/AutoReadHolderHandler.java
index 037bf47f..7c457e16 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/AutoReadHolderHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/AutoReadHolderHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import io.netty.channel.ChannelDuplexHandler;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/GS4QueryHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/GS4QueryHandler.java
index 287de50a..ff4a63b2 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/GS4QueryHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/GS4QueryHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import static com.velocitypowered.api.event.query.ProxyQueryEvent.QueryType.BASIC;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/LegacyPingDecoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/LegacyPingDecoder.java
index 875bc3c7..be716ec2 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/LegacyPingDecoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/LegacyPingDecoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import static com.velocitypowered.proxy.protocol.util.NettyPreconditions.checkFrame;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/LegacyPingEncoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/LegacyPingEncoder.java
index f45981a7..1383493b 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/LegacyPingEncoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/LegacyPingEncoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import com.velocitypowered.proxy.protocol.packet.LegacyDisconnect;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherDecoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherDecoder.java
index 6a8e5158..1f662fd5 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherDecoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherDecoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherEncoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherEncoder.java
index 8a5983b2..b4fd027e 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherEncoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherEncoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressDecoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressDecoder.java
index 21b958b0..b03451fe 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressDecoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressDecoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import static com.velocitypowered.natives.util.MoreByteBufUtils.ensureCompatible;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressEncoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressEncoder.java
index aad60760..f6cb495c 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressEncoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressEncoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import com.velocitypowered.natives.compression.VelocityCompressor;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftDecoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftDecoder.java
index aaf1a58e..c648d3e1 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftDecoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftDecoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftEncoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftEncoder.java
index 889232de..7ed59202 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftEncoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftEncoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintFrameDecoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintFrameDecoder.java
index f125faae..d81f53f5 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintFrameDecoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintFrameDecoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import com.velocitypowered.proxy.protocol.netty.VarintByteDecoder.DecodeResult;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintLengthEncoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintLengthEncoder.java
index 667ab630..867ea9b7 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintLengthEncoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintLengthEncoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import com.velocitypowered.natives.encryption.JavaVelocityCipher;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/VarintByteDecoder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/VarintByteDecoder.java
index 1c01f124..c50672f1 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/VarintByteDecoder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/VarintByteDecoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.netty;
 
 import io.netty.util.ByteProcessor;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/AvailableCommands.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/AvailableCommands.java
index 90a9d3bc..b40d13f0 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/AvailableCommands.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/AvailableCommands.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.google.common.base.MoreObjects;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/BossBar.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/BossBar.java
index 63ef23ed..4ba18272 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/BossBar.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/BossBar.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Chat.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Chat.java
index fd64ea60..915305a7 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Chat.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Chat.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ClientSettings.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ClientSettings.java
index 361b1178..a2d7e32b 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ClientSettings.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ClientSettings.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Disconnect.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Disconnect.java
index 52d63cf5..3987311e 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Disconnect.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Disconnect.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/EncryptionRequest.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/EncryptionRequest.java
index 6575ac73..ff0cc594 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/EncryptionRequest.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/EncryptionRequest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import static com.velocitypowered.proxy.connection.VelocityConstants.EMPTY_BYTE_ARRAY;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/EncryptionResponse.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/EncryptionResponse.java
index b59b46c6..905ea05a 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/EncryptionResponse.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/EncryptionResponse.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import static com.velocitypowered.proxy.connection.VelocityConstants.EMPTY_BYTE_ARRAY;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Handshake.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Handshake.java
index 4ac520ea..d2b425a7 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Handshake.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Handshake.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import static com.velocitypowered.proxy.connection.forge.legacy.LegacyForgeConstants.HANDSHAKE_HOSTNAME_TOKEN;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/HeaderAndFooter.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/HeaderAndFooter.java
index 34f8d609..8001012a 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/HeaderAndFooter.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/HeaderAndFooter.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import static com.velocitypowered.proxy.protocol.ProtocolUtils.writeString;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/JoinGame.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/JoinGame.java
index 84b4fd3e..9899ef0c 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/JoinGame.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/JoinGame.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.google.common.collect.ImmutableSet;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/KeepAlive.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/KeepAlive.java
index 32febe2b..c2db00b9 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/KeepAlive.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/KeepAlive.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyDisconnect.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyDisconnect.java
index 0a8d7bba..caf6150e 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyDisconnect.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyDisconnect.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.google.common.collect.ImmutableList;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyHandshake.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyHandshake.java
index a7141b9e..00f37b2e 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyHandshake.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyHandshake.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyPing.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyPing.java
index eb8e754c..e404ed55 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyPing.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LegacyPing.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LoginPluginMessage.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LoginPluginMessage.java
index c1eb6b95..0b57ca72 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LoginPluginMessage.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LoginPluginMessage.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LoginPluginResponse.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LoginPluginResponse.java
index 5321c0ee..bc66fadf 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LoginPluginResponse.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/LoginPluginResponse.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/PlayerListItem.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/PlayerListItem.java
index 056de8b4..5aa66706 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/PlayerListItem.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/PlayerListItem.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.google.common.collect.ImmutableList;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/PluginMessage.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/PluginMessage.java
index ecd61062..9faaae04 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/PluginMessage.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/PluginMessage.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import static com.velocitypowered.proxy.protocol.util.PluginMessageUtil.transformLegacyToModernChannel;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ResourcePackRequest.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ResourcePackRequest.java
index 435b5fb5..522ddc2c 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ResourcePackRequest.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ResourcePackRequest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ResourcePackResponse.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ResourcePackResponse.java
index 16f47ac3..245e2f50 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ResourcePackResponse.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ResourcePackResponse.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.event.player.PlayerResourcePackStatusEvent.Status;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Respawn.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Respawn.java
index d8b0a674..5b94a1df 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Respawn.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/Respawn.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ServerLogin.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ServerLogin.java
index cef02eb0..57959c37 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ServerLogin.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ServerLogin.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ServerLoginSuccess.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ServerLoginSuccess.java
index b7a3e54d..d0f41569 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ServerLoginSuccess.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ServerLoginSuccess.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/SetCompression.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/SetCompression.java
index 50996cc1..8a225de9 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/SetCompression.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/SetCompression.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusPing.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusPing.java
index 16a6fcd7..94eb593f 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusPing.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusPing.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusRequest.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusRequest.java
index e0aaef5e..d9fc74ec 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusRequest.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusRequest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusResponse.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusResponse.java
index df0d856c..303ec6fa 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusResponse.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/StatusResponse.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TabCompleteRequest.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TabCompleteRequest.java
index 30bf616a..90e415cb 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TabCompleteRequest.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TabCompleteRequest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import static com.velocitypowered.api.network.ProtocolVersion.MINECRAFT_1_13;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TabCompleteResponse.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TabCompleteResponse.java
index d63ac927..c983fed8 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TabCompleteResponse.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TabCompleteResponse.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import static com.velocitypowered.api.network.ProtocolVersion.MINECRAFT_1_13;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TitlePacket.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TitlePacket.java
index 085936ae..49fe876d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TitlePacket.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/TitlePacket.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ArgumentPropertyRegistry.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ArgumentPropertyRegistry.java
index b98365d3..96a25f9a 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ArgumentPropertyRegistry.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ArgumentPropertyRegistry.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import static com.velocitypowered.proxy.protocol.packet.brigadier.DoubleArgumentPropertySerializer.DOUBLE;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ArgumentPropertySerializer.java
index 077474a6..0dbc66dc 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import io.netty.buffer.ByteBuf;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ByteArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ByteArgumentPropertySerializer.java
index 742084a0..a6d24c64 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ByteArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ByteArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import io.netty.buffer.ByteBuf;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/DoubleArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/DoubleArgumentPropertySerializer.java
index 269d686d..2162a980 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/DoubleArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/DoubleArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import static com.velocitypowered.proxy.protocol.packet.brigadier.IntegerArgumentPropertySerializer.HAS_MAXIMUM;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/EmptyArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/EmptyArgumentPropertySerializer.java
index f101484a..4338381d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/EmptyArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/EmptyArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import io.netty.buffer.ByteBuf;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/FloatArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/FloatArgumentPropertySerializer.java
index 1ccd7af2..2f5b9bc9 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/FloatArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/FloatArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import static com.velocitypowered.proxy.protocol.packet.brigadier.IntegerArgumentPropertySerializer.HAS_MAXIMUM;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/GenericArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/GenericArgumentPropertySerializer.java
index f4e27dbf..bc8202f2 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/GenericArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/GenericArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import com.mojang.brigadier.arguments.ArgumentType;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/IntegerArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/IntegerArgumentPropertySerializer.java
index 29a112a6..333d653f 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/IntegerArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/IntegerArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import com.mojang.brigadier.arguments.IntegerArgumentType;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/LongArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/LongArgumentPropertySerializer.java
index 9d3b40b6..f2b37ac3 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/LongArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/LongArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import static com.velocitypowered.proxy.protocol.packet.brigadier.IntegerArgumentPropertySerializer.HAS_MAXIMUM;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ModArgumentProperty.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ModArgumentProperty.java
index f8213326..cf6283b2 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ModArgumentProperty.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ModArgumentProperty.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import com.mojang.brigadier.StringReader;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ModArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ModArgumentPropertySerializer.java
index 6c6eebbd..58b65b98 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ModArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/ModArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import com.velocitypowered.proxy.protocol.ProtocolUtils;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/PassthroughProperty.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/PassthroughProperty.java
index deb5bdda..71b91d45 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/PassthroughProperty.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/PassthroughProperty.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import com.mojang.brigadier.StringReader;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/StringArgumentPropertySerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/StringArgumentPropertySerializer.java
index 3c6f03a1..790eee12 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/StringArgumentPropertySerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/brigadier/StringArgumentPropertySerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.brigadier;
 
 import com.mojang.brigadier.arguments.StringArgumentType;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/legacyping/LegacyMinecraftPingVersion.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/legacyping/LegacyMinecraftPingVersion.java
index 5c0864f7..40ce92df 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/legacyping/LegacyMinecraftPingVersion.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/legacyping/LegacyMinecraftPingVersion.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.packet.legacyping;
 
 public enum LegacyMinecraftPingVersion {
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/ByteBufDataInput.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/ByteBufDataInput.java
index 587366ad..667d1a0c 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/ByteBufDataInput.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/ByteBufDataInput.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.util;
 
 import com.google.common.io.ByteArrayDataInput;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/ByteBufDataOutput.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/ByteBufDataOutput.java
index 644c1e3c..e7ff5d62 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/ByteBufDataOutput.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/ByteBufDataOutput.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.util;
 
 import com.google.common.io.ByteArrayDataOutput;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/DeferredByteBufHolder.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/DeferredByteBufHolder.java
index 6a35a4e5..b6655bc2 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/DeferredByteBufHolder.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/DeferredByteBufHolder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.util;
 
 import io.netty.buffer.ByteBuf;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/FaviconSerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/FaviconSerializer.java
index a6786232..b1447c87 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/FaviconSerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/FaviconSerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.util;
 
 import com.google.gson.JsonDeserializationContext;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/GameProfileSerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/GameProfileSerializer.java
index c93b9a3c..96de2610 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/GameProfileSerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/GameProfileSerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.util;
 
 import com.google.gson.JsonDeserializationContext;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/NettyPreconditions.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/NettyPreconditions.java
index cd59316e..52bdb75d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/NettyPreconditions.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/NettyPreconditions.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.util;
 
 import com.google.common.base.Strings;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/PluginMessageUtil.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/PluginMessageUtil.java
index c91a1967..5e30c135 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/PluginMessageUtil.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/PluginMessageUtil.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.util;
 
 import static com.google.common.base.Preconditions.checkArgument;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/VelocityLegacyHoverEventSerializer.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/VelocityLegacyHoverEventSerializer.java
index dbf27b03..9d706d3d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/VelocityLegacyHoverEventSerializer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/VelocityLegacyHoverEventSerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.util;
 
 import java.io.IOException;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/scheduler/VelocityScheduler.java b/proxy/src/main/java/com/velocitypowered/proxy/scheduler/VelocityScheduler.java
index 4049be78..8f33b355 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/scheduler/VelocityScheduler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/scheduler/VelocityScheduler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.scheduler;
 
 import static com.google.common.base.Preconditions.checkArgument;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/server/PingSessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/server/PingSessionHandler.java
index fb411042..0e2c5a57 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/server/PingSessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/server/PingSessionHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.server;
 
 import com.velocitypowered.api.network.ProtocolVersion;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/server/ServerMap.java b/proxy/src/main/java/com/velocitypowered/proxy/server/ServerMap.java
index 7184c6df..41d337be 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/server/ServerMap.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/server/ServerMap.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.server;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/server/VelocityRegisteredServer.java b/proxy/src/main/java/com/velocitypowered/proxy/server/VelocityRegisteredServer.java
index 3cf0313d..fd1c6176 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/server/VelocityRegisteredServer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/server/VelocityRegisteredServer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.server;
 
 import static com.velocitypowered.proxy.network.Connections.FRAME_DECODER;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabList.java b/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabList.java
index 1cae947f..bfb8d358 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabList.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabList.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.tablist;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListEntry.java b/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListEntry.java
index c9208284..579945d9 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListEntry.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListEntry.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.tablist;
 
 import com.velocitypowered.api.proxy.player.TabList;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListEntryLegacy.java b/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListEntryLegacy.java
index 7bb7c0c2..ab0892e9 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListEntryLegacy.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListEntryLegacy.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.tablist;
 
 import com.velocitypowered.api.proxy.player.TabListEntry;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListLegacy.java b/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListLegacy.java
index 95966c6b..bb5401c2 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListLegacy.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/tablist/VelocityTabListLegacy.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.tablist;
 
 import com.google.common.collect.ImmutableList;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/AddressUtil.java b/proxy/src/main/java/com/velocitypowered/proxy/util/AddressUtil.java
index 706e8035..600aee59 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/AddressUtil.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/AddressUtil.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/BrigadierUtils.java b/proxy/src/main/java/com/velocitypowered/proxy/util/BrigadierUtils.java
index 73bf67f8..db6a5919 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/BrigadierUtils.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/BrigadierUtils.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/DurationUtils.java b/proxy/src/main/java/com/velocitypowered/proxy/util/DurationUtils.java
index a588ed22..2307d686 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/DurationUtils.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/DurationUtils.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util;
 
 import java.time.Duration;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/EncryptionUtils.java b/proxy/src/main/java/com/velocitypowered/proxy/util/EncryptionUtils.java
index 82cc2e2a..3c555889 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/EncryptionUtils.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/EncryptionUtils.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util;
 
 import java.math.BigInteger;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/InformationUtils.java b/proxy/src/main/java/com/velocitypowered/proxy/util/InformationUtils.java
index 89f24ab9..f054e0cc 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/InformationUtils.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/InformationUtils.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util;
 
 import com.google.common.collect.ImmutableList;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/VelocityChannelRegistrar.java b/proxy/src/main/java/com/velocitypowered/proxy/util/VelocityChannelRegistrar.java
index b07e4815..1ce6e98c 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/VelocityChannelRegistrar.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/VelocityChannelRegistrar.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/AdventureBossBarManager.java b/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/AdventureBossBarManager.java
index 7552e220..3ff17998 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/AdventureBossBarManager.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/AdventureBossBarManager.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.bossbar;
 
 import com.google.common.collect.MapMaker;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/VelocityBossBar.java b/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/VelocityBossBar.java
index 6b4d9b01..be060c15 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/VelocityBossBar.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/VelocityBossBar.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.bossbar;
 
 import static com.google.common.base.Preconditions.checkNotNull;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/collect/CappedSet.java b/proxy/src/main/java/com/velocitypowered/proxy/util/collect/CappedSet.java
index 492a3454..8e54d775 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/collect/CappedSet.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/collect/CappedSet.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.collect;
 
 import com.google.common.base.Preconditions;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/collect/Enum2IntMap.java b/proxy/src/main/java/com/velocitypowered/proxy/util/collect/Enum2IntMap.java
index 99621a35..27db5740 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/collect/Enum2IntMap.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/collect/Enum2IntMap.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.collect;
 
 import java.util.EnumSet;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/collect/IdentityHashStrategy.java b/proxy/src/main/java/com/velocitypowered/proxy/util/collect/IdentityHashStrategy.java
index b741d3ac..516c7cc7 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/collect/IdentityHashStrategy.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/collect/IdentityHashStrategy.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.collect;
 
 import it.unimi.dsi.fastutil.Hash.Strategy;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/concurrent/Once.java b/proxy/src/main/java/com/velocitypowered/proxy/util/concurrent/Once.java
index f921d26d..20397f29 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/concurrent/Once.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/concurrent/Once.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.concurrent;
 
 /**
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/concurrent/VelocityNettyThreadFactory.java b/proxy/src/main/java/com/velocitypowered/proxy/util/concurrent/VelocityNettyThreadFactory.java
index aaa0a864..4ac6a48c 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/concurrent/VelocityNettyThreadFactory.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/concurrent/VelocityNettyThreadFactory.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.concurrent;
 
 import static com.google.common.base.Preconditions.checkNotNull;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/except/QuietDecoderException.java b/proxy/src/main/java/com/velocitypowered/proxy/util/except/QuietDecoderException.java
index 7f86220f..441e1f3d 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/except/QuietDecoderException.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/except/QuietDecoderException.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.except;
 
 import io.netty.handler.codec.DecoderException;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/except/QuietRuntimeException.java b/proxy/src/main/java/com/velocitypowered/proxy/util/except/QuietRuntimeException.java
index a2d029d2..bb143a61 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/except/QuietRuntimeException.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/except/QuietRuntimeException.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.except;
 
 /**
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/GuavaCacheRatelimiter.java b/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/GuavaCacheRatelimiter.java
index 71c25013..0c1976be 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/GuavaCacheRatelimiter.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/GuavaCacheRatelimiter.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.ratelimit;
 
 import com.google.common.annotations.VisibleForTesting;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/NoopCacheRatelimiter.java b/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/NoopCacheRatelimiter.java
index b1faa534..caf60286 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/NoopCacheRatelimiter.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/NoopCacheRatelimiter.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.ratelimit;
 
 import java.net.InetAddress;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/Ratelimiter.java b/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/Ratelimiter.java
index c6cfa07d..08837091 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/Ratelimiter.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/Ratelimiter.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.ratelimit;
 
 import java.net.InetAddress;
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/Ratelimiters.java b/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/Ratelimiters.java
index bd15abb0..b9d7a293 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/Ratelimiters.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/ratelimit/Ratelimiters.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.ratelimit;
 
 import java.util.concurrent.TimeUnit;
diff --git a/proxy/src/main/resources/log4j2.component.properties b/proxy/src/main/resources/log4j2.component.properties
index e43f5dac..16151e32 100644
--- a/proxy/src/main/resources/log4j2.component.properties
+++ b/proxy/src/main/resources/log4j2.component.properties
@@ -1,2 +1,19 @@
+#
+# Copyright (C) 2018 Velocity Contributors
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+
 log4j2.contextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector
 log4j.skipJansi=true
diff --git a/proxy/src/main/resources/log4j2.xml b/proxy/src/main/resources/log4j2.xml
index 85bf1574..ddbac071 100644
--- a/proxy/src/main/resources/log4j2.xml
+++ b/proxy/src/main/resources/log4j2.xml
@@ -1,4 +1,21 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+    Copyright (C) 2018 Velocity Contributors
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-->
+
 <Configuration status="warn">
   <Appenders>
     <TerminalConsole name="TerminalConsole">
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/command/CommandManagerTests.java b/proxy/src/test/java/com/velocitypowered/proxy/command/CommandManagerTests.java
index ae8fa834..b9b40cc3 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/command/CommandManagerTests.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/command/CommandManagerTests.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command;
 
 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/command/MockCommandSource.java b/proxy/src/test/java/com/velocitypowered/proxy/command/MockCommandSource.java
index c6dad95f..bd2cbd35 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/command/MockCommandSource.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/command/MockCommandSource.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.command;
 
 import com.velocitypowered.api.command.CommandSource;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/connection/client/HandshakeSessionHandlerTest.java b/proxy/src/test/java/com/velocitypowered/proxy/connection/client/HandshakeSessionHandlerTest.java
index c89fc9b8..4a8af822 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/connection/client/HandshakeSessionHandlerTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/connection/client/HandshakeSessionHandlerTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.connection.client;
 
 import static com.velocitypowered.proxy.connection.client.HandshakeSessionHandler.cleanVhost;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/plugin/MockEventManager.java b/proxy/src/test/java/com/velocitypowered/proxy/plugin/MockEventManager.java
index 20be3a07..e882e7d2 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/plugin/MockEventManager.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/plugin/MockEventManager.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin;
 
 /**
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/plugin/MockPluginManager.java b/proxy/src/test/java/com/velocitypowered/proxy/plugin/MockPluginManager.java
index 170c0cdb..33864a16 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/plugin/MockPluginManager.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/plugin/MockPluginManager.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin;
 
 import com.google.common.collect.ImmutableList;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/plugin/util/PluginDependencyUtilsTest.java b/proxy/src/test/java/com/velocitypowered/proxy/plugin/util/PluginDependencyUtilsTest.java
index 0a290136..aff2ae73 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/plugin/util/PluginDependencyUtilsTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/plugin/util/PluginDependencyUtilsTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.plugin.util;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/protocol/PacketRegistryTest.java b/proxy/src/test/java/com/velocitypowered/proxy/protocol/PacketRegistryTest.java
index e1c40091..1780d14a 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/protocol/PacketRegistryTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/protocol/PacketRegistryTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol;
 
 import static com.google.common.collect.Iterables.getLast;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/protocol/util/PluginMessageUtilTest.java b/proxy/src/test/java/com/velocitypowered/proxy/protocol/util/PluginMessageUtilTest.java
index 2c4b162d..ef40511d 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/protocol/util/PluginMessageUtilTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/protocol/util/PluginMessageUtilTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.protocol.util;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/scheduler/VelocitySchedulerTest.java b/proxy/src/test/java/com/velocitypowered/proxy/scheduler/VelocitySchedulerTest.java
index 2afc9083..a7e565cd 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/scheduler/VelocitySchedulerTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/scheduler/VelocitySchedulerTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.scheduler;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/testutil/FakePluginManager.java b/proxy/src/test/java/com/velocitypowered/proxy/testutil/FakePluginManager.java
index 1aedeeaa..64a64f4c 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/testutil/FakePluginManager.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/testutil/FakePluginManager.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.testutil;
 
 import com.google.common.collect.ImmutableList;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/util/EncryptionUtilsTest.java b/proxy/src/test/java/com/velocitypowered/proxy/util/EncryptionUtilsTest.java
index f6229a01..7aa34779 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/util/EncryptionUtilsTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/util/EncryptionUtilsTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/util/ServerMapTest.java b/proxy/src/test/java/com/velocitypowered/proxy/util/ServerMapTest.java
index 7c67b48b..ad120670 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/util/ServerMapTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/util/ServerMapTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/util/VelocityChannelRegistrarTest.java b/proxy/src/test/java/com/velocitypowered/proxy/util/VelocityChannelRegistrarTest.java
index 40af5079..2e92217c 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/util/VelocityChannelRegistrarTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/util/VelocityChannelRegistrarTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/util/collect/CappedSetTest.java b/proxy/src/test/java/com/velocitypowered/proxy/util/collect/CappedSetTest.java
index 11df2237..73943be9 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/util/collect/CappedSetTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/util/collect/CappedSetTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.collect;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/util/concurrent/OnceTest.java b/proxy/src/test/java/com/velocitypowered/proxy/util/concurrent/OnceTest.java
index f84b8115..aeb7ffb5 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/util/concurrent/OnceTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/util/concurrent/OnceTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.concurrent;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/proxy/src/test/java/com/velocitypowered/proxy/util/ratelimit/GuavaCacheRatelimiterTest.java b/proxy/src/test/java/com/velocitypowered/proxy/util/ratelimit/GuavaCacheRatelimiterTest.java
index 3ebb8db0..39f50e7f 100644
--- a/proxy/src/test/java/com/velocitypowered/proxy/util/ratelimit/GuavaCacheRatelimiterTest.java
+++ b/proxy/src/test/java/com/velocitypowered/proxy/util/ratelimit/GuavaCacheRatelimiterTest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.velocitypowered.proxy.util.ratelimit;
 
 import static org.junit.jupiter.api.Assertions.assertFalse;