There is no need to require rake inside the rakefile

Rakefile

@@ -1,8 +1,7 @@
 # encoding: UTF-8
-require 'rake'
+
 require 'rake/testtask'
 require 'rake/rdoctask'
-require File.join(File.dirname(__FILE__), 'lib', 'simple_form', 'version')
 
 desc 'Default: run unit tests.'
 task :default => :test
@@ -22,4 +21,4 @@ Rake::RDocTask.new(:rdoc) do |rdoc|
   rdoc.options << '--line-numbers' << '--inline-source'
   rdoc.rdoc_files.include('README.rdoc')
   rdoc.rdoc_files.include('lib/**/*.rb')
-end
+end