diff --git a/Library/Homebrew/cask/auditor.rb b/Library/Homebrew/cask/auditor.rb
index 4fb30e7acd..a4ccf4c908 100644
--- a/Library/Homebrew/cask/auditor.rb
+++ b/Library/Homebrew/cask/auditor.rb
@@ -1,3 +1,4 @@
+require "cleanup"
 require "cask/download"
 
 module Cask