diff --git a/.github/workflows/auto-assign-pr.yml b/.github/workflows/auto-assign-pr.yml
index c0403767b..0e0e08786 100644
--- a/.github/workflows/auto-assign-pr.yml
+++ b/.github/workflows/auto-assign-pr.yml
@@ -5,6 +5,10 @@ on:
   pull_request_target:
     types: [opened, reopened]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 permissions:
   pull-requests: write