diff --git a/.github/workflows/grunt.yml b/.github/workflows/grunt.yml
index c8117808..bb139749 100644
--- a/.github/workflows/grunt.yml
+++ b/.github/workflows/grunt.yml
@@ -1,5 +1,5 @@
 name: grunt
-on:
+'on':
   push:
   pull_request:
 jobs:
diff --git a/.github/workflows/pdd.yml b/.github/workflows/pdd.yml
index 1c8b7d0b..b883f368 100644
--- a/.github/workflows/pdd.yml
+++ b/.github/workflows/pdd.yml
@@ -1,6 +1,6 @@
 ---
 name: pdd
-on:
+'on':
   push:
     branches:
       - master