appraise "rails41" do
  gem "activesupport", "4.1"
end

appraise "rails42" do
  gem "activesupport", "4.2"
end

appraise "rails50" do
  gem "activesupport", "5.0"
end

appraise "rails51" do
  gem "activesupport", "5.1"
end