diff --git a/hack/release.sh b/hack/release.sh
old mode 100644
new mode 100755
index 9f12cd9..e963d89
--- a/hack/release.sh
+++ b/hack/release.sh
@@ -1,5 +1,13 @@
 #!/bin/bash
-export VERSION=0.3.1
+
+if [ -z "$1" ]; then
+  echo "ERROR: Version missing"
+  echo "Example usage: ./hack/release.sh 0.3.1"
+  exit 1
+fi
+
+VERSION=$1
+echo "Releasing v$VERSION..."
 
 # Tidy.
 go mod tidy
@@ -9,6 +17,6 @@ git tag v$VERSION-preview -m "Preview release."
 git push origin v$VERSION-preview
 
 # Master.
-git checkout master
-git merge v$VERSION-preview
-git push
\ No newline at end of file
+# git checkout master
+# git merge v$VERSION-preview
+# git push
\ No newline at end of file