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
You need to update ruby build. After update you can install all current suported versions.
If you using rbenv installed via git use
cd "$(rbenv root)"/plugins/ruby-build && git pull
Or via home brew
$ brew upgrade ruby-build $ brew upgrade rbenv