appraise "activemodel-4.2" do gem "activemodel", "~> 4.2.0" end appraise "activemodel-4.1" do gem "activemodel", "~> 4.1.0" end appraise "activemodel-4.0" do gem "activemodel", "~> 4.0.0" end appraise "activemodel-3.2" do gem "activemodel", "~> 3.2.0" end appraise "activemodel-3.1" do gem "activemodel", "~> 3.1.0" end appraise "activemodel-3.0" do gem "activemodel", "~> 3.0.0" end