diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index a6fc8745f8..6f7942b5b8 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -12,6 +12,13 @@ jobs:
     name: Validate PR title
     runs-on: ubuntu-latest
     steps:
-      - uses: amannn/action-semantic-pull-request@v5
+      - uses: amannn/action-semantic-pull-request@v5.2.0
+        with:
+          # This ensures the subject doesn't start with an uppercase character
+          subjectPattern: ^(?![A-Z]).+$
+          subjectPatternError: |
+            The subject "{subject}" found in the pull request title "{title}"
+            didn't match the configured pattern. Please ensure that the subject
+            doesn't start with an uppercase character.
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}