Homebrew saying Xcode is outdated

http://stackoverflow.com/questions/40296756/homebrew-saying-xcode-is-outdated

 sudo xcode-select --switch /Applications/XCode.app

So as @NicolasMiari mentioned in a comment above, the fix to my issue ended up having to have both Xcode 7 and Xcode 8 on my machine. I went on the apple developer site, downloaded Xcode 8, saved it to my documents and then used:

sudo xcode-select-switch~/Documents/Xcode.app/

and then ran my brew install which worked as expected. Afterwards I ran:

sudo xcode-select-switch/Applications/Xcode.app/

to switch back to Xcode 7.3.1.

Hope this helps someone else! and thanks for the suggestions!