diff --git a/app/controllers/admin/users_controller.rb b/app/controllers/admin/users_controller.rb
index eee71fa..e71c17b 100644
--- a/app/controllers/admin/users_controller.rb
+++ b/app/controllers/admin/users_controller.rb
@@ -1,3 +1,5 @@
+require 'csv'
+
 class UsersController < AdminController
 
   protect 'manage_environment_users', :environment
--
libgit2 0.21.2