appraise "rails2" do gem "rails", "~> 2.3.14" gem "paperclip", :path => "../" end appraise "rails3" do gem "rails", "~> 3.0.10" gem "paperclip", :path => "../" end appraise "rails3_1" do gem "rails", "~> 3.1.0" gem "paperclip", :path => "../" end