diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index c4dbdcf..a10dd34 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,6 +1,10 @@
 name: tests
 on: [pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   tests:
     runs-on: ubuntu-latest