diff --git a/.github/workflows/build-python-package.yml b/.github/workflows/build-python-package.yml
index e623fde6f..441942926 100644
--- a/.github/workflows/build-python-package.yml
+++ b/.github/workflows/build-python-package.yml
@@ -67,6 +67,7 @@ jobs:
   upload_pypi:
     needs: [build_wheels, build_sdist]
     runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/master' && github.event_name == 'push'
     
     steps:
       - uses: actions/checkout@v2