diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e2327b6..e8fe1cf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,6 +55,8 @@ jobs:
           git config --global user.name "$GITHUB_ACTOR"
 
       - name: Commit and push version change
+        env:
+            GITHUB_HEAD_REF: ${{ github.event.pull_request.head.ref }}
         run: |
           git add .
           git commit -m "Auto change version."