Gemfile in ruby_jard-0.2.3 vs Gemfile in ruby_jard-0.3.0

@@ -2,14 +2,21 @@
 
 source 'http://rubygems.org'
 
 gemspec
 
+if Gem.path.all? { |path| Dir[File.join(path, 'gems/jard_merge_sort*')].empty? }
+  puts '[HACK] Install jard_merge_sort'
+  puts `gem install ./spec/examples/jard_merge_sort/jard_merge_sort-0.1.0.gem`
+end
+
 gem 'byebug', '~> 11.1.0'
+gem 'jard_merge_sort', require: false
 gem 'rake', '~> 12.0'
 gem 'rspec', '~> 3.0'
-gem 'rubocop', '~> 0.88'
-gem 'rubocop-rspec', require: false
+gem 'rubocop', '~> 0.89.1'
+gem 'rubocop-rspec', '~> 1.43.1', require: false
 
 group :test do
+  gem 'parallel_tests'
   gem 'rspec-retry'
 end