diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index c46a8c3c2b8d..2e6ff7f91b6f 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -29,6 +29,10 @@ on:
 permissions:
   contents: read # Default everything to read-only
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
 jobs:
   stage1:
     if: github.repository_owner == 'llvm'
diff --git a/.github/workflows/libcxx-run-benchmarks.yml b/.github/workflows/libcxx-run-benchmarks.yml
index 6ca49d0f04dc..63763ba58e7d 100644
--- a/.github/workflows/libcxx-run-benchmarks.yml
+++ b/.github/workflows/libcxx-run-benchmarks.yml
@@ -23,10 +23,6 @@ env:
   CXX: clang++-22
   COMMENT_BODY: ${{ github.event.comment.body  }}
 
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
-  cancel-in-progress: true
-
 jobs:
   run-benchmarks:
     if: >-