diff --git a/.github/workflows/action.yml b/.github/workflows/action.yml
index 3c71f3d..b0646f0 100644
--- a/.github/workflows/action.yml
+++ b/.github/workflows/action.yml
@@ -1,5 +1,9 @@
 name: Check Markdown links
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches: