Gemfile in ckeditor-5.1.0 vs Gemfile in ckeditor-5.1.1

@@ -2,20 +2,23 @@
 
 source 'http://rubygems.org'
 
 gemspec
 
-gem 'rails', '~> 5.2.x'
+gem 'rails', '~> 5.2.4.6'
 
 platforms :ruby do
   gem 'sass'
   gem 'sqlite3', '~> 1.3.6'
+  gem 'sprockets', '~> 3.7.2'
 
   group :development, :test do
     gem 'capybara', '>= 0.4.0'
     gem 'jquery-rails', '~> 4.3.3'
     gem 'mynyml-redgreen', '~> 0.7.1', require: 'redgreen'
     gem 'rails-controller-testing'
+
+    gem 'rubocop-rails'
   end
 
   group :active_record do
     gem 'carrierwave'
     gem 'dragonfly'