appraise "5.2" do gem "activerecord", "~> 5.2" end appraise "5.1" do gem "activerecord", ">= 5.1.0", "< 5.2.0" end appraise "5.0" do gem "activerecord", ">= 5.0.0", "< 5.1.0" gem "i18n", "1.5.1" end appraise "edge" do gem "rails", git: "https://github.com/rails/rails.git", branch: "master" end