diff --git a/.woodpecker/prepare.yml b/.woodpecker/prepare.yml
index 0308ef0..570b472 100644
--- a/.woodpecker/prepare.yml
+++ b/.woodpecker/prepare.yml
@@ -19,6 +19,8 @@ steps:
     image: alpine/git
     commands:
       - git tag ${SOURCE_TAG} -a -m "Release ${SOURCE_TAG}"
+    environment:
+      SOURCE_TAG: "${SOURCE_TAG}"
   - name: push to repo
     image: appleboy/drone-git-push
     settings: