diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
index 3c9d630..8fdd22a 100644
--- a/.github/workflows/build_wheels.yml
+++ b/.github/workflows/build_wheels.yml
@@ -48,7 +48,7 @@ jobs:
     runs-on: ubuntu-latest
 
     # upload to PyPI on every release
-    if: github.event.type == 'ReleaseEvent'
+    if: github.event.release && github.event.action == 'published'
     steps:
       - uses: actions/download-artifact@v3
         with: