diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index c0ad9c30..07f49bf1 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -14,10 +14,10 @@ jobs:
         persist-credentials: false
     - name: Set up Gradle
       uses: gradle/actions/setup-gradle@v4
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v4
       with:
-        java-version: 17
-        distribution: 'temurin'
+        java-version: 21
+        distribution: 'zulu'
     - name: Build with Gradle
       run: ./gradlew build
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 55a0c6ad..6e83aa67 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -6,6 +6,7 @@ log4j = "2.24.3"
 netty = "4.2.1.Final"
 
 [plugins]
+fill = "io.papermc.fill.gradle:1.0.3"
 indra-publishing = "net.kyori.indra.publishing:2.0.6"
 shadow = "io.github.goooler.shadow:8.1.5"
 spotless = "com.diffplug.spotless:6.25.0"
diff --git a/proxy/build.gradle.kts b/proxy/build.gradle.kts
index f345f232..1559f5fd 100644
--- a/proxy/build.gradle.kts
+++ b/proxy/build.gradle.kts
@@ -1,9 +1,11 @@
 import com.github.jengelman.gradle.plugins.shadow.transformers.Log4j2PluginsCacheFileTransformer
+import io.papermc.fill.model.BuildChannel
 
 plugins {
     application
     id("velocity-init-manifest")
     alias(libs.plugins.shadow)
+    alias(libs.plugins.fill)
 }
 
 application {
@@ -108,6 +110,24 @@ tasks {
     }
 }
 
+val projectVersion = version as String
+fill {
+    project("velocity")
+
+    build {
+        channel = BuildChannel.STABLE
+        versionFamily("3.0.0")
+        version(projectVersion)
+
+        downloads {
+            register("server:default") {
+                file = tasks.shadowJar.flatMap { it.archiveFile }
+                nameResolver.set { project, _, version, build -> "$project-$version-$build.jar" }
+            }
+        }
+    }
+}
+
 dependencies {
     implementation(project(":velocity-api"))
     implementation(project(":velocity-native"))