diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0322a8082..0f66159e8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,7 +19,7 @@ on:
           type: boolean
 
 concurrency:
-  group: ${{ github.ref }}
+  group: ${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 jobs: