appraise "redis_4_0_x" do gem "redis", "~> 4.0.0" end appraise "redis_4_1_x" do gem "redis", "~> 4.1.0" end appraise "redis_4_6_x" do gem "redis", "~> 4.6.0" end appraise "redis_4_x" do gem "redis", "~> 4.0" end appraise "redis_5_x" do gem "redis", "~> 5.0" end