Just disable the auto-updates. Also, I'm 100% certain all it did was update the formulae (similar to apt-get update, NOT apt-get upgrade). I've been using hom

Just disable the auto-updates. Also, I'm 100% certain all it did was update the formulae (similar to apt-get update, NOT apt-get upgrade). I've been using homebrew for years and this is the default behavior, so unless you purposefully set it up to upgrade everything this is PEBKAC. AFAIK the only time it upgrades everything is when you do a blanket `brew upgrade`. And if you're pinned to something like postgresql@10 it will stay at that major version.