Ruby is improved every year ! 4 We'd like to improve our environments " 4 Do you develop with only ruby 2.0.0 specification? 4 Do you want to change jobs to a company still using ruby 2.0?
my case? 4 make applications running on both ruby 2.0.0 and 2.3.1 4 deploy on ruby 2.0.0 4 bundle install with ruby 2.3.1 4 restart applications with ruby 2.3.1