Appraisals in optimize-js-1.0.1 vs Appraisals in optimize-js-1.0.2

@@ -1,18 +1,22 @@
 appraise 'rails-3' do
   gem 'rails', '~> 3'
   gem 'sprockets', '~> 2'
+  gem 'uglifier'
 end
 
 appraise 'rails-4-with-sprockets-2' do
   gem 'rails', '~> 4'
   gem 'sprockets', '~> 3'
+  gem 'uglifier'
 end
 
 appraise 'rails-4-with-sprockets-3' do
   gem 'rails', '~> 4'
   gem 'sprockets', '~> 3'
+  gem 'uglifier'
 end
 
 appraise 'rails-5' do
   gem 'rails', '~> 5'
+  gem 'uglifier'
 end