diff --git a/config/application.rb b/config/application.rb
index 8603bd1..6c85b5a 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -11,6 +11,10 @@ module CodespacesTryRails
     # Initialize configuration defaults for originally generated Rails version.
     config.load_defaults 7.0
 
+    config.action_dispatch.default_headers = {
+      'X-Frame-Options' => 'ALLOW-FROM githubpreview.dev'
+    }
+
     # Configuration for the application, engines, and railties goes here.
     #
     # These settings can be overridden in specific environments using the files