diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 5d07af7..7d31e16 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -15,6 +15,7 @@ jobs:
         with:
           submodules: 'true'
       - name: GCloud auth
+        if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
         uses: 'google-github-actions/auth@v2'
         with:
           credentials_json: '${{ secrets.BIGQUERY_KEY }}'