appraise "activerecord-4.0" do
  gem "activerecord", "~> 4.0"
end

appraise "activerecord-4.1" do
  gem "activerecord", "~>4.1"
end

appraise "activerecord-4.2" do
  gem "activerecord", "~>4.2"
end

appraise "activerecord-5" do
  gem "activesupport", '5.0.0.beta4'
  gem "activerecord", "5.0.0.beta4"
end