diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b17e5be4f..62980d67e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,6 +8,10 @@ on:
   merge_group:
   workflow_dispatch:
 
+concurrency:
+  group: ci-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   format:
     runs-on: ubuntu-latest