diff --git a/.github/workflows/flake.yml b/.github/workflows/flake.yml
index 81908cc..6b3bf40 100644
--- a/.github/workflows/flake.yml
+++ b/.github/workflows/flake.yml
@@ -8,9 +8,12 @@ name: Flake8
   push:
     branches:
     - master
-  pull_request:
+  pull_request: null
 jobs:
   flake8:
     uses: steinwurf/flake8-action/.github/workflows/action.yml@2.0.0
     with:
       excluded_errors: F632
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
+  cancel-in-progress: true