diff --git a/bin/ebooks b/bin/ebooks
index fc52310..24a5120 100755
--- a/bin/ebooks
+++ b/bin/ebooks
@@ -3,6 +3,7 @@
 
 require 'twitter_ebooks'
 require 'ostruct'
+require 'fileutils'
 
 module Ebooks::Util
   def pretty_exception(e)