When do I *actually* need to restart Reverb?

I've been curious about something for a while now. On a live Laravel app, when does Reverb actually need to be restarted? The docs are pretty vague on this.

Currently I am restarting it on every deployment, which causes some annoying cURL errors now and then, since there's a small window of downtime.

So, does Reverb need to be restarted for code changes? Like, every time I want to add a new event? Or only when I edit its configuration? (reverb.php)

Thanks for the help in advance.