diff --git a/.github/workflows/commitlint.yml b/.github/workflows/commitlint.yml
index 4f96e72..42a5375 100644
--- a/.github/workflows/commitlint.yml
+++ b/.github/workflows/commitlint.yml
@@ -1,5 +1,8 @@
+# -*- coding: utf-8 -*-
+# vim: ft=yaml
+---
 name: Commitlint
-on: [pull_request]
+'on': [pull_request]
 
 jobs:
   lint: