diff --git a/boxenprofiler.gemspec b/boxenprofiler.gemspec
index 172aaf3..cbce6c7 100644
--- a/boxenprofiler.gemspec
+++ b/boxenprofiler.gemspec
@@ -19,5 +19,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'goodcop', '~> 0.6.0'
   s.add_development_dependency 'rake', '~> 12.3.0'
   s.add_development_dependency 'rspec', '~> 3.8.0'
-  s.add_development_dependency 'rubocop', '~> 0.63.0'
+  s.add_development_dependency 'rubocop', '~> 0.64.0'
 end