diff --git a/website/config.ru b/website/config.ru
index 5cf4e322d..fd8f01d6c 100644
--- a/website/config.ru
+++ b/website/config.ru
@@ -12,7 +12,7 @@ use Rack::Deflater
 # to do.
 use Rack::StaticCache,
   :root => "build",
-  :urls => ["/images", "/javascripts", "/stylesheets"],
+  :urls => ["/assets"],
   :duration => 2,
   :versioning => false