universign.gemspec in universign-0.2.6 vs universign.gemspec in universign-0.2.7

@@ -29,7 +29,8 @@
   spec.require_paths = ['lib']
 
   spec.add_development_dependency 'bundler', '~> 1.11'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
-  spec.add_development_dependency 'rubocop', '~> 0.36.0'
+  spec.add_development_dependency 'rubocop', '~> 0.52.0'
+  spec.required_ruby_version = '~> 2.0'
 end