Gemfile in simplecov-html-0.11.0 vs Gemfile in simplecov-html-0.12.0

@@ -20,6 +20,8 @@
 group :development do
   gem "rubocop"
   gem "sass"
   # sprockets 4.0 requires ruby 2.5+
   gem "sprockets", "~> 3.7"
+  gem "uglifier"
+  gem "yui-compressor"
 end