diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 2952893cf4..f8b1372c4c 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -36,6 +36,11 @@ env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
   BUILD_TYPE: RelWithDebInfo
 
+# Cancel the previous wf run in PRs.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   check-style:
     runs-on: ubuntu-22.04