Gemfile in whois-parser-1.2.0 vs Gemfile in whois-parser-2.0.0

@@ -1,5 +1,6 @@
-source 'https://rubygems.org'
+source "https://rubygems.org"
 
 gemspec
 
-gem 'activesupport', '< 5' if RUBY_VERSION < '2.2.2'
+gem "rubocop", require: false
+gem "rubocop-rspec", require: false