1 files changed, 2 insertions, 1 deletions

diff --git a/Rakefile b/Rakefile
index c49942c0bb..835a2dec50 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,5 +1,6 @@
-gem 'rdoc', '= 2.2'
+gem 'rdoc', '>= 2.5.9'
 require 'rdoc'
+require 'horo'
 
 require 'rake'
 require 'rake/rdoctask'