Gemfile in simple_oauth-0.3.0 vs Gemfile in simple_oauth-0.3.1

@@ -7,10 +7,10 @@
   gem 'backports'
   gem 'coveralls'
   gem 'mime-types', '~> 1.25', :platforms => [:jruby, :ruby_18]
   gem 'rest-client', '~> 1.6.0', :platforms => [:jruby, :ruby_18]
   gem 'rspec', '>= 2.14'
-  gem 'rubocop', '>= 0.25', :platforms => [:ruby_19, :ruby_20, :ruby_21]
+  gem 'rubocop', '>= 0.28', :platforms => [:ruby_19, :ruby_20, :ruby_21]
   gem 'simplecov', '>= 0.9'
   gem 'yardstick'
 end
 
 gemspec