diff --git a/stoptime.rb b/stoptime.rb
index 991e27f..e14e4a7 100644
--- a/stoptime.rb
+++ b/stoptime.rb
@@ -13,6 +13,7 @@ require "action_view"
 require "active_support"
 require "camping"
 require "camping/mab"
+require "camping/ar"
 require "pathname"
 require "sass/plugin/rack"