Ruby version not in ruby-build list for rbenv

Question

I\'m using Rails 4.2 and wanted to update my Ruby version as well with rbenv.

I used Homebrew to install ruby-build and no matter how many times I try to update via

Answer 1

Usually, follow these steps to install a new Ruby version with rbenv:

$ brew update               
$ brew upgrade ruby-build
$ brew upgrade rbenv

Check which versions are available after updating:

$ ruby-build --definitions

Install a specific version (for example 2.1.3) with:

$ rbenv install 2.1.3

Or if you are interested into improved support for UTF8 characters in the irb console:

$ RUBY_CONFIGURE_OPTS=--with-readline-dir=`brew --prefix readline` rbenv install 2.1.3

After these steps I usually set the newest version as my global default:

$ rbenv global 2.1.3