appraise 'latest' do gem 'activejob' end appraise 'activejob-6.1' do gem 'activejob', '~> 6.1.4' end appraise 'activejob-6.0' do gem 'activejob', '~> 6.0.4' end appraise 'activejob-5.2' do gem 'activejob', '~> 5.2.6' end