diff --git a/boxenprofiler.gemspec b/boxenprofiler.gemspec
index 47987d5..01c1f2a 100644
--- a/boxenprofiler.gemspec
+++ b/boxenprofiler.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'codecov', '~> 0.1.1'
   s.add_development_dependency 'fuubar', '~> 2.3.0'
-  s.add_development_dependency 'goodcop', '~> 0.3.0'
+  s.add_development_dependency 'goodcop', '~> 0.4.0'
   s.add_development_dependency 'rake', '~> 12.3.0'
   s.add_development_dependency 'rspec', '~> 3.7.0'
   s.add_development_dependency 'rubocop', '~> 0.53.0'