This rbenv plugin adds the rbenv update command that updated rbenv and all installed plugins.

Simply clone the repository into the plugins directory:

mkdir -p "$(rbenv root)"/plugins
git clone https://github.com/toy/rbenv-update.git "$(rbenv root)"/plugins/update

Update rbenv and all plugins:

rbenv update

Update selectively:

rbenv update rbenv ruby-build