appraise "3.0" do gem "rails", "~> 3.0.9" end appraise "3.1" do gem "rails", "~> 3.1.6" end appraise "3.2" do gem "rails", "~> 3.2.6" end appraise "4.0" do gem "rails", "~> 4.0.12" end appraise "4.1" do gem "rails", "~> 4.1.8" end appraise "4.2" do gem "rails", "~> 4.2.0" end