ffi-openmpt.gemspec in ffi-openmpt-0.4.1 vs ffi-openmpt.gemspec in ffi-openmpt-0.5.0

@@ -34,7 +34,8 @@
 
   spec.add_development_dependency 'bundler', '~> 2.0.1'
   spec.add_development_dependency 'coveralls', '~> 0.8'
   spec.add_development_dependency 'minitest', '~> 5.0'
   spec.add_development_dependency 'rake', '~> 10.0'
-  spec.add_development_dependency 'rubocop', '~> 0.54'
+  spec.add_development_dependency 'rubocop', '0.67.2'
+  spec.add_development_dependency 'rubocop-performance', '1.1.0'
 end