diff --git a/lib/archive/engine.rb b/lib/archive/engine.rb
index 80828e1..e272114 100644
--- a/lib/archive/engine.rb
+++ b/lib/archive/engine.rb
@@ -6,6 +6,7 @@ module Archive
         base_url File.expand_path File.dirname(__FILE__)
         widget_methods ["widget"]
         widget_settings [{"data_count"=>10}]
+        models_to_cache [:archive_file]
         taggable "ArchiveFile"
         categorizable
         authorizable