git_index.gemspec in git_ls-0.4.0 vs git_index.gemspec in git_ls-0.5.0

@@ -25,13 +25,15 @@
     `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(bin|test|spec|features)/}) }
   end
 
   spec.require_paths = ['lib']
 
+  spec.add_development_dependency 'benchmark-ips'
   spec.add_development_dependency 'bundler', '>= 2'
   spec.add_development_dependency 'leftovers'
   spec.add_development_dependency 'pry', '> 0'
   spec.add_development_dependency 'rake', '>= 12.3.3'
+  spec.add_development_dependency 'rspec'
   spec.add_development_dependency 'rubocop'
   spec.add_development_dependency 'rubocop-performance'
   spec.add_development_dependency 'rubocop-rspec'
   spec.add_development_dependency 'simplecov', '~> 0.18.5'
   spec.add_development_dependency 'spellr'