diff --git a/Gemfile b/Gemfile
index ff556532..d4ef7a66 100644
--- a/Gemfile
+++ b/Gemfile
@@ -26,7 +26,7 @@ group :test do
   gem "nokogiri", "~> 1.7"
   gem "rspec"
   gem "rspec-mocks"
-  gem "rubocop", "~> 0.63.1"
+  gem "rubocop", "~> 0.64.0"
   gem "test-dependency-theme", :path => File.expand_path("test/fixtures/test-dependency-theme", __dir__)
   gem "test-theme", :path => File.expand_path("test/fixtures/test-theme", __dir__)
   gem "test-theme-symlink", :path => File.expand_path("test/fixtures/test-theme-symlink", __dir__)