diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 9c29b53..5e10090 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -10,6 +10,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.head_ref || github.run_id }}
+  cancel-in-progress: ${{ github.head_ref != 'main' }}
+
 jobs:
   checks:
     runs-on: ubuntu-latest