appraise "rails_4_2" do version = "~> 4.2.0" gem "activesupport", version gem "actionpack", version gem "activerecord", version gem "railties", version gem "sqlite3", "~> 1.3.6" end appraise "rails_5_0" do version = "~> 5.0.0" gem "activesupport", version gem "actionpack", version gem "activerecord", version gem "railties", version gem "sqlite3", "~> 1.3.6" end appraise "rails_5_1" do version = "~> 5.1.0" gem "activesupport", version gem "actionpack", version gem "activerecord", version gem "railties", version end appraise "rails_5_2" do version = "~> 5.2.0" gem "activesupport", version gem "actionpack", version gem "activerecord", version gem "railties", version end appraise "rails_6_0" do version = "~> 6.0.0.beta1" gem "activesupport", version gem "actionpack", version gem "activerecord", version gem "railties", version end