appraise "rails3.2" do
  gem "railties", "~> 3.2.0"
  gem "test-unit", "~> 3.0"
end

appraise "rails4.x" do
  gem "railties", "~> 4.0"
end

appraise "sinatra1.x" do
  gem "sinatra", "~> 1.4"
end