Gemfile in uuid4-1.3.4 vs Gemfile in uuid4-1.4.0

@@ -1,9 +1,13 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in uuid4.gemspec
 gemspec
 
 gem 'activesupport'
-gem 'rake-release', '~> 1.2'
 gem 'rake'
-gem 'rspec', '~> 3.0'
\ No newline at end of file
+gem 'rake-release', '~> 1.2'
+gem 'rspec', '~> 3.0'
+
+gem 'rubocop-config', github: 'jgraichen/rubocop-config', ref: 'v12', require: false