diff --git a/cluster/apps/gitea-act/gitea-act.yml b/cluster/apps/gitea-act/gitea-act.yml
index a5654aa..629aaff 100644
--- a/cluster/apps/gitea-act/gitea-act.yml
+++ b/cluster/apps/gitea-act/gitea-act.yml
@@ -39,7 +39,7 @@ spec:
           echo "Gitea is ready!"
       containers:
       - name: runner
-        image: gitea/act_runner:nightly
+        image: gitea/act_runner@sha256:c22df48ef094e152688d896ba2599be9e0f59a43a32c35c5fa9ea48d0c3f80ee
         command: ["sh", "-c", "while ! nc -z localhost 2376 </dev/null; do echo 'waiting for docker daemon...'; sleep 5; done; /sbin/tini -- run.sh"]
         env:
         - name: DOCKER_HOST