diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 51c61702..a1edc0c9 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -60,12 +60,15 @@ jobs:
           path: src/${{ matrix.package }}/dist/
 
   publish:
+    runs-on: ubuntu-latest
     needs: [build, detect-packages]
+    if: github.event_name == 'release'
+
     strategy:
       matrix:
         package: ${{ fromJson(needs.detect-packages.outputs.packages) }}
     name: Publish ${{ matrix.package }}
-    runs-on: ubuntu-latest
+
     environment: release
     permissions:
       id-token: write # Required for trusted publishing