diff --git a/.github/workflows/test_and_publish.yml b/.github/workflows/test_and_publish.yml
index d7ddb129..7dde0738 100644
--- a/.github/workflows/test_and_publish.yml
+++ b/.github/workflows/test_and_publish.yml
@@ -91,7 +91,7 @@ jobs:
     name: Publish
     runs-on: ubuntu-latest
     needs: test
-    if: github.event_name == 'push'
+    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
     steps:
     - uses: actions/checkout@master
     - name: Publish to Registry