Gemfile in rouge-3.28.0 vs Gemfile in rouge-3.29.0

@@ -9,10 +9,11 @@
 gem 'minitest', '>= 5.0'
 gem 'minitest-power_assert'
 gem 'power_assert', '~> 1.2'
 
 gem 'parallel', '~> 1.13.0' if RUBY_VERSION < '2.2.0'
-gem 'rubocop', '~> 0.49.1'
+gem 'rubocop', '~> 1.0', '<= 1.11'
+gem 'rubocop-performance'
 
 # don't try to install redcarpet under jruby
 gem 'redcarpet', :platforms => :ruby
 
 # Profiling