appraise 'rails4_1' do gem 'avro', '1.8.2' gem 'activesupport', '~> 4.1.16' gem 'activemodel', '~> 4.1.16' end appraise 'rails4_2' do gem 'avro', '1.8.2' gem 'activesupport', '~> 4.2.7.1' gem 'activemodel', '~> 4.2.7.1' end appraise 'rails5_0' do gem 'avro', '1.8.2' gem 'activesupport', '~> 5.0.3' gem 'activemodel', '~> 5.0.3' end appraise 'avro-patches-4_1' do gem 'avro-patches' gem 'activesupport', '~> 4.1.16' gem 'activemodel', '~> 4.1.16' end appraise 'avro-patches-5_0' do gem 'avro-patches' gem 'activesupport', '~> 5.0.3' gem 'activemodel', '~> 5.0.3' end