diff --git a/.github/workflows/test-pr.yml b/.github/workflows/test-pr.yml
index 7540ffa1..f9235b6d 100644
--- a/.github/workflows/test-pr.yml
+++ b/.github/workflows/test-pr.yml
@@ -10,6 +10,10 @@ on:
     branches:
       - main
 
+concurrency:
+  group: ${{ github.head_ref }}
+  cancel-in-progress: true
+
 jobs:
   # This job exists so that PRs from outside the main repo are rejected
   fail_on_remote: