diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b6fc95d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+pkg
+doc
diff --git a/Rakefile b/Rakefile
index 4a05ecf..96594a3 100644
--- a/Rakefile
+++ b/Rakefile
@@ -5,12 +5,12 @@ require 'rake/rdoctask'
 require 'rake/testtask'
 require 'fileutils'
 begin
-  gem 'rdoc', '~> 2.2.0'
+  gem 'rdoc', '~> 2.3.0'
   require 'rdoc'
   $:.unshift 'extras'
 rescue Gem::LoadError
-  puts "RDoc 2.2 required to build docs"
-  puts "Please run `gem install rdoc --version 2.2`"
+  puts "RDoc 2.4 required to build docs"
+  puts "Please run `gem install rdoc`"
 end
 include FileUtils