diff --git a/colorls.gemspec b/colorls.gemspec
index eeac088..5041a17 100644
--- a/colorls.gemspec
+++ b/colorls.gemspec
@@ -73,7 +73,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rspec', '~> 3.7'
   spec.add_development_dependency 'rspec-its', '~> 1.2'
   spec.add_development_dependency 'rubocop', '~> 0.90.0'
-  spec.add_development_dependency 'rubocop-performance', '~> 1.7.0'
+  spec.add_development_dependency 'rubocop-performance', '~> 1.8.0'
   spec.add_development_dependency 'rubocop-rspec', '~> 1.27'
   spec.add_development_dependency 'rubygems-tasks', '~> 0'
   spec.add_development_dependency 'simplecov', '~> 0.19.0'