appraise "activerecord_4_1" do
  gem 'activerecord',  '~> 4.1.0'
  gem 'activesupport', '~> 4.1.0'
end

appraise "activerecord_4_2" do
  gem 'activerecord',  '~> 4.2.0'
  gem 'activesupport', '~> 4.2.0'
end