diff --git a/README.md b/README.md
index d1b3d2e..c8cfa7a 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@ This action generates a changelog based on your Git history using [git-cliff](ht
 ### Environment variables
 
 - `OUTPUT`: Output file. (Default: `"git-cliff/CHANGELOG.md"`)
+- `DEBUG`: Set to a not empty value (e.g. `"true"`) to print executed commmands. (Default: `unset`)
 
 > [!IMPORTANT]
 > Check out the entire history via `fetch-depth: 0` before running this action.
diff --git a/run.sh b/run.sh
index 7f1b517..fd053f6 100755
--- a/run.sh
+++ b/run.sh
@@ -1,6 +1,10 @@
 #!/bin/bash
 
-set -uxo pipefail
+if [[ -n "$DEBUG" ]]; then
+    set -x
+fi
+
+set -uo pipefail
 
 # Avoid file expansion when passing parameters like with '*'
 set -o noglob