`brew update` i imagine

Try:

    $ brew update # get latest version of Homebrew
 
    $ brew cleanup # Homebrew housekeeping
 
    $ brew cask cleanup # Cask housekeeping
 
    $ brew --version
    #Expected output: Homebrew 1.1.0

Pretty sure just brew update.

That's what I thought, but after running that it doesn't log any sort of version update.

I have done brew update and now brew --version reports:

Homebrew 1.1.0 Homebrew/homebrew-core (git revision 375a8; last commit 2016-11-07)

It did not mention updating to new version in the output of the update command though.

Confirmed. It worked for me too :) Thanks.

brew update I just tried `brew upgrade` but that is upgrading not itself, but every package installed with it instead. >:-&

brew update should do it. You might be using too-old a version or hit an update bug. Try:

cd $(brew --repo); git fetch; git reset --hard origin/master; brew update

Thanks for this comment, it fixed my update problems.

brew update: updates formulae and Homebrew itself.

brew upgrade: updates everything.