Gemfile in twog-0.3.2 vs Gemfile in twog-0.3.3

@@ -1,6 +1,9 @@
 source 'http://rubygems.org'
+ruby '2.6.3'
 
+gem 'rack', '~>2.0.6'
+gem 'nokogiri', '>= 1.10.4'
 gem 'twitter_oauth', '>=0.3.3'
 gem 'bitly', '>=0.4.0'
 gem 'whenever', '>=0.4.1'
 gem 'activesupport', '>=2.3.5'
 gem 'jeweler', '>= 0.11.0'