diff --git a/colorls.gemspec b/colorls.gemspec
index 2b55755..0a7b5e4 100644
--- a/colorls.gemspec
+++ b/colorls.gemspec
@@ -78,7 +78,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rubocop', '~> 1.50.1'
   spec.add_development_dependency 'rubocop-performance', '~> 1.17.1'
   spec.add_development_dependency 'rubocop-rake', '~> 0.5'
-  spec.add_development_dependency 'rubocop-rspec', '~> 2.19.0'
+  spec.add_development_dependency 'rubocop-rspec', '~> 2.20.0'
   spec.add_development_dependency 'rubygems-tasks', '~> 0'
   spec.add_development_dependency 'simplecov', '~> 0.22.0'
   spec.metadata['rubygems_mfa_required'] = 'true'