appraise "rails-3.2" do gem 'activesupport', github: "rails/rails", branch: '3-2-stable' gem 'strong_parameters' end appraise "rails-4.0" do gem "activesupport", github: "rails/rails", branch: '4-0-stable' end appraise "rails-4.1" do gem "activesupport", github: "rails/rails", branch: '4-1-stable' end appraise "rails-4.2" do gem "activesupport", github: "rails/rails", branch: '4-2-stable' end appraise "rails-edge" do gem "activesupport", github: "rails/rails" gem 'arel', github: 'rails/arel' end