appraise 'rails-3' do gem 'rails', '3.2.22.5' gem 'rack-cache', '<= 1.2' # Pin as next rack-cache version (1.3) removes Ruby1.9 support end appraise 'rails-4' do gem 'rails', '4.2.10' end appraise 'rails-5' do gem 'rails', '5.2.1' end appraise 'rails-edge' do gem 'rails', github: 'rails/rails' end appraise 'rack-edge' do gem 'rack', github: 'rack/rack' end appraise 'multi_json' do gem 'multi_json', require: 'multi_json' end appraise 'multi_xml' do gem 'multi_xml', require: 'multi_xml' end