diff --git a/.woodpecker.yml b/.woodpecker.yml
index b565fd9..9f6e5e5 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -3,7 +3,7 @@ pipeline:
     image: plugins/kaniko
     settings:
       repo: docker.io/thallian/alpine-s6
-      tags: latest,${CI_COMMIT_SHA:0:8},${CI_COMMIT_REF}
+      tags: latest,${CI_COMMIT_SHA:0:8},${CI_COMMIT_REFSPEC}
       dockerfile: Dockerfile
       username:
         from_secret: DOCKER_USER