diff --git a/README.md b/README.md
index 65a2369..ff6fefa 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,9 @@ A [composite GitHub action](https://docs.github.com/en/actions/creating-actions/
        types: [opened, synchronize, reopened]
 
    name: CodeSee
+   concurrency:
+     group: ${{ github.head_ref || github.run_id}}
+     cancel-in-progress: true
 
    permissions: read-all