appraise 'rails3.2' do
  gem 'rails', '~> 3.2.0'
end

appraise 'rails4.0' do
  gem 'rails', '~> 4.0.13'
end

appraise 'rails4.1' do
  gem 'rails', '~> 4.1.16'
end

appraise 'rails4.2' do
  gem 'rails', '~> 4.2.9'
end

appraise 'rails5.0' do
  gem 'rails', '~> 5.0.0'
end

appraise 'rails5.1' do
  gem 'rails', '~> 5.1.0'
end

appraise 'rails5.2' do
  gem 'rails', '~> 5.2.0'
end