diff --git a/.github/workflows/ci-selftests.yml b/.github/workflows/ci-selftests.yml
index fa2833260..d86856e74 100644
--- a/.github/workflows/ci-selftests.yml
+++ b/.github/workflows/ci-selftests.yml
@@ -15,6 +15,10 @@ on:
 #    - cron: '15 13 * * 3'
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}
+  cancel-in-progress: true
+
 jobs:
   build-n-test:
     runs-on: ubuntu-22.04