diff --git a/src/docker-entrypoint.sh b/src/docker-entrypoint.sh
index b90445b..d9a61a0 100755
--- a/src/docker-entrypoint.sh
+++ b/src/docker-entrypoint.sh
@@ -177,7 +177,7 @@ fi
 set +e
 num_changed=$(git_status)
 set -e
-echo "num_changed=${num_changed}" >> $GITHUB_OUTPUT
+echo "num_changed=${num_changed}" >> "$GITHUB_OUTPUT"
 
 if [ "${INPUT_GIT_PUSH}" = "true" ]; then
     git_commit