appraise "rails42" do
  gem "activesupport", "~> 4.2.10"
end

appraise "rails50" do
  gem "activesupport", "~> 5.0.0"
end

appraise "rails51" do
  gem "activesupport", "~> 5.1.0"
end

appraise "rails52" do
  gem "activesupport", "~> 5.2.0"
end