diff --git a/config/environment.rb.tmpl b/config/environment.rb.tmpl
index 409e81d9..9842240e 100644
--- a/config/environment.rb.tmpl
+++ b/config/environment.rb.tmpl
@@ -27,6 +27,7 @@ Rails::Initializer.run do |config|
   config.load_paths += %W( #{RAILS_ROOT}/app/apis )
 
   config.gem "highline"
+  config.gem "has_many_polymorphs"
 
   config.action_controller.use_accept_header = true