Rakefile in any_cache-0.5.0 vs Rakefile in any_cache-0.6.0

@@ -2,16 +2,18 @@
 
 require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
 require 'rubocop'
 require 'rubocop-rspec'
+require 'rubocop-performance'
 require 'rubocop/rake_task'
 
 RuboCop::RakeTask.new(:rubocop) do |t|
   config_path = File.expand_path(File.join('.rubocop.yml'), __dir__)
 
   t.options = ['--config', config_path]
   t.requires << 'rubocop-rspec'
+  t.requires << 'rubocop-performance'
 end
 
 RSpec::Core::RakeTask.new(:rspec)
 
 task default: :rspec