diff --git a/.github/workflows/test_pr.yml b/.github/workflows/test_pr.yml
index 7c6022bb..fd204e56 100644
--- a/.github/workflows/test_pr.yml
+++ b/.github/workflows/test_pr.yml
@@ -13,6 +13,7 @@ concurrency:
 jobs:
   detect-changes:
     name: Detect changed file groups
+    if: ${{ github.event_name != 'pull_request' || !startsWith(github.event.pull_request.head.ref, 'release-please--') }}
     runs-on: ubuntu-22.04
     timeout-minutes: 10
     permissions: