diff --git a/.github/workflows/pr_labeler.yml b/.github/workflows/pr_labeler.yml
index 3159979c1bfe..190e3ef8b921 100644
--- a/.github/workflows/pr_labeler.yml
+++ b/.github/workflows/pr_labeler.yml
@@ -20,6 +20,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        with:
+          ref: ${{ github.event.pull_request.base.sha }}
       - name: Check for missing tests
         id: check
         env: