diff --git a/config/environments/production.rb b/config/environments/production.rb
index 927c442..99fe36b 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -87,6 +87,8 @@
   # Do not dump schema after migrations.
   config.active_record.dump_schema_after_migration = false
 
+  Rails.application.routes.default_url_options[:host] = ENV['PRODUCTION_URL']
+
   # Enable DNS rebinding protection and other `Host` header attacks.
   # config.hosts = [
   #   "example.com",     # Allow requests from example.com