When using oh-my-zsh, it’s infrequently asking to update itself. If you’re like me, you’re typing command right away when opening a new tab in iTerm. Unless your command starts with y or n, you’re ignoring the update.

Oh-my-zsh comes with its own command-line utility omz. You can manually run an oh-my-zsh update using omz update:

omz update  

That’s it! The command checks the oh-my-zsh upstream for changes since the last update.