--- nokogiri-1.5.0.beta.4/Rakefile.debug	2011-03-18 03:28:41.000000000 +0900
+++ nokogiri-1.5.0.beta.4/Rakefile	2011-03-18 04:26:44.000000000 +0900
@@ -3,6 +3,7 @@
 require 'rubygems'
 gem 'hoe', '>= 2.1.0'
 require 'hoe'
+require 'rake/dsl'
 
 windows = RUBY_PLATFORM =~ /(mswin|mingw)/i
 java    = RUBY_PLATFORM =~ /java/