If you neglect to update regularly, upgrading several versions at once may require considerable effort, making it difficult to resolve security vulnerabilities quickly.
Heroku recommends you run the latest Ruby version your app can handle. This is handy if you are running your app through a continuous integration tool and want to ensure it checks your codebase against other versions of Ruby, but restrict it to a certain version when deployed to Heroku.
Ruby 2.2.4 is not the latest Ruby version, and is here for demonstration purposes only. We recommend limiting use of environment variables in your and we do not recommend using conditionals.
This will get you going with the latest version of rbenv and make it easy to fork and contribute any changes back upstream.
command doesn't ship with rbenv out of the box, but is provided by the ruby-build project.
First verify that you’re using a recent version of bundler locally.
We recommend running at least the same version as Heroku. A way to avoid this confusion is to set up Heroku review apps and to have a Continuous Integration (CI) server deploy to Heroku when commits are merged to master.
Put rbenv to work with Bundler for painless Ruby upgrades and bulletproof deployments. Specify your app's Ruby version once, in a single file. No headaches running apps on different versions of Ruby.
Just Works™ from the command line and with app servers like Pow.
If you installed it either as part of Git Hub checkout process outlined above or via Homebrew, you should be able to: You don't need sudo to install gems.
Typically, the Ruby versions will be installed and writeable by your user.
Override the Ruby version anytime: just set an environment variable. Your application's executables are its interface with ops.