diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1ca1389..e4bc8e4 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -181,6 +181,7 @@ jobs:
     name: Deploy packages
     runs-on: ubuntu-latest
     needs: test-wheels
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
     permissions:
       id-token: write
       contents: read