Gemfile in pug-rails-3.0.0.rc3 vs Gemfile in pug-rails-3.0.0

@@ -1,8 +1,13 @@
 # encoding: UTF-8
 # frozen_string_literal: true
 
 source "https://rubygems.org"
 
-gem "rails", "~> 5"
-
 gemspec
+
+gem "rails",     "~> 5"
+gem "rake",      "~> 10.0"
+gem "appraisal", "~> 2.1", require: false
+gem "rubocop",   "~> 0.51", require: false
+gem "test-unit", "~> 3.1"
+gem "nokogiri",  "~> 1.6", "< 1.7"