diff --git a/Rakefile b/Rakefile
index 110e597..29b433e 100644
--- a/Rakefile
+++ b/Rakefile
@@ -161,11 +161,15 @@ namespace :test do
   end
 end
 
-require 'rake/rdoctask'
+begin
+  require 'rake/rdoctask'
+rescue 
+  require 'rdoc/task'
+end
 desc "Generate documentation"
 Rake::RDocTask.new do |rd|
-  rd.main = "README.rdoc"
-  rd.rdoc_files.include("README.rdoc", "lib/**/*.rb")
+  rd.main = "README.md"
+  rd.rdoc_files.include("README.md", "lib/**/*.rb")
   rd.rdoc_dir = 'rdoc'
 end