diff --git a/.github/workflows/merge.yml b/.github/workflows/merge.yml
index 09c04a3..fc71881 100644
--- a/.github/workflows/merge.yml
+++ b/.github/workflows/merge.yml
@@ -5,6 +5,10 @@ on:
     types:
       - created
 
+concurrency:
+  group: merge-${{ github.event.issue.number }}
+  cancel-in-progress: true
+
 jobs:
   merge:
     runs-on: ubuntu-latest