appraise "rails-5-0" do gem "rails", "~> 5.0.0" end appraise "rails-5-1" do gem "rails", "~> 5.1.0" end appraise "rails-5-2" do gem "rails", "~> 5.2.0" end if RUBY_VERSION >= "2.5.0" appraise "rails-6-0" do gem "rails", "~> 6.0.0" end appraise "rails-6-1" do gem "rails", "~> 6.1.0" end appraise "rails-head" do gem "rails", github: "rails/rails", branch: "main" end end