Gemfile in mongoid-history-0.5.0 vs Gemfile in mongoid-history-0.6.0

@@ -1,14 +1,35 @@
 source 'https://rubygems.org'
 
 gemspec
 
-case version = ENV['MONGOID_VERSION'] || '~> 5.0'
+case version = ENV['MONGOID_VERSION'] || '~> 6.0.0.rc0'
+when 'HEAD'
+  gem 'mongoid', github: 'mongodb/mongoid'
+when /6/
+  gem 'mongoid', '~> 6.0.0.rc0'
 when /5/
   gem 'mongoid', '~> 5.0'
+  gem 'mongoid-observers', '~> 0.2.0'
 when /4/
   gem 'mongoid', '~> 4.0'
+  gem 'mongoid-observers', '~> 0.2.0'
 when /3/
   gem 'mongoid', '~> 3.1'
 else
   gem 'mongoid', version
+end
+
+group :development, :test do
+  gem 'rake'
+  gem 'bundler'
+end
+
+group :test do
+  gem 'mongoid-danger', '~> 0.1.0', require: false
+  gem 'rspec', '~> 3.1'
+  gem 'rubocop', '0.34.1'
+  gem 'yard'
+  gem 'gem-release'
+  gem 'coveralls'
+  gem 'request_store'
 end