diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index a017a43..e351385 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -1,5 +1,6 @@
 name: CI
 
+on:
   pull_request:
     paths-ignore:
     - '*.md'