diff --git a/lib/bundler/templates/newgem/github/workflows/main.yml.tt b/lib/bundler/templates/newgem/github/workflows/main.yml.tt
index 654978033f..2a6c505cfd 100644
--- a/lib/bundler/templates/newgem/github/workflows/main.yml.tt
+++ b/lib/bundler/templates/newgem/github/workflows/main.yml.tt
@@ -1,6 +1,10 @@
 name: Ruby
 
-on: [push,pull_request]
+on:
+  push:
+    - <%= config[:git_default_branch] %>
+
+  pull_request:
 
 jobs:
   build: