config/routes.rb in tanshuku-0.0.2 vs config/routes.rb in tanshuku-0.0.3

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 Tanshuku::Engine.routes.draw do
-  default_url_options Rails.application.routes.default_url_options
+  default_url_options Rails.application.routes.default_url_options.deep_dup
 
   get "/:key", to: "urls#show"
 end