diff --git a/.github/workflows/pr_notifications.yml b/.github/workflows/pr_notifications.yml
index cec83b8b..aded99d7 100644
--- a/.github/workflows/pr_notifications.yml
+++ b/.github/workflows/pr_notifications.yml
@@ -10,7 +10,7 @@ permissions:
   pull-requests: write
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
   cancel-in-progress: true
 
 jobs: