How do I update zsh to the latest version (not Apple's default)?

in

I like to use Homebrew to install and manage the software on my Mac hence these instructions are brew specific.

First, check the zsh info

$ brew info zsh

Most likely you'll see Apple's version so let's install zsh from Homebrew

$ brew install zsh

Once that's completed you'll need to edit your shells file to add the new shell path

$ sudo vi /etc/shells

Scroll to the end of the file and add the following line

/usr/local/bin/zsh

After you save that edit you'll need to update the default shell 

$ chsh -s /usr/local/bin/zsh

Zsh is now upgraded. I also recommend installing Oh My Zsh. The handy upgrade command once installed is below

$ upgrade_oh_my_zsh