Gemfile in cartup-0.1.6 vs Gemfile in cartup-0.1.7

@@ -2,5 +2,6 @@
 
 git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
 # Specify your gem's dependencies in cartup.gemspec
 gemspec
+gem 'rubocop', '~> 0.52.1', require: false
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