Gemfile in mock_redis-0.15.3 vs Gemfile in mock_redis-0.15.4

@@ -5,9 +5,9 @@
 
 # Run all pre-commit hooks via Overcommit during CI runs
 gem 'overcommit', '0.28.0'
 
 # Pin tool versions (which are executed by Overcommit) for Travis builds
-gem 'rubocop', '0.34.2'
+gem 'rubocop', '0.35.1'
 gem 'travis', '~> 1.7'
 
 gem 'coveralls', require: false