diff --git a/guides/source/contributing_to_ruby_on_rails.md b/guides/source/contributing_to_ruby_on_rails.md
index dd66f9c9b2..f35e653a02 100644
--- a/guides/source/contributing_to_ruby_on_rails.md
+++ b/guides/source/contributing_to_ruby_on_rails.md
@@ -44,6 +44,7 @@ Having a way to reproduce your issue will be very helpful for others to help con
 * Template for Action Pack (controllers, routing) issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/action_controller_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/action_controller_master.rb)
 * Template for Active Job issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_job_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_job_master.rb)
 * Template for Active Storage issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_storage_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_storage_master.rb)
+* Template for Action Mailbox issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/action_mailbox_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/action_mailbox_master.rb)
 * Generic template for other issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/generic_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/generic_master.rb)
 
 These templates include the boilerplate code to set up a test case against either a released version of Rails (`*_gem.rb`) or edge Rails (`*_master.rb`).