Gemfile in mopti-0.2.2 vs Gemfile in mopti-0.2.3

@@ -1,9 +1,15 @@
-source "https://rubygems.org"
+# frozen_string_literal: true
 
+source 'https://rubygems.org'
+
 # Specify your gem's dependencies in mopti.gemspec
 gemspec
 
-gem "rake", "~> 12.0"
-gem "rspec", "~> 3.0"
-gem "rbs", "~> 1.2"
-gem "steep", "~> 0.44"
+gem 'rake', '~> 12.0'
+gem 'rbs', '~> 1.2'
+gem 'rspec', '~> 3.0'
+gem 'rubocop', '~> 1.33'
+gem 'rubocop-performance', '~> 1.14'
+gem 'rubocop-rake', '~> 0.6.0'
+gem 'rubocop-rspec', '~> 2.12'
+gem 'steep', '~> 0.44'