diff --git a/Gemfile b/Gemfile
index b3d1d830..648c0834 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ gemspec
 gem 'overcommit', '0.32.0'
 
 # Pin tool versions (which are executed by Overcommit) for Travis builds
-gem 'rubocop', '0.37.2'
+gem 'rubocop', '0.38.0'
 gem 'travis', '~> 1.7'
 
 gem 'coveralls', require: false