Solution: Build error with older roots project

Hello everyone, Xcode recently ran some updates and Im now getting this error (see bellow) running build on older sage 8.4.2 projects, for many of you the solutions probably obvious. But I figured I post it incase someone gets stuck.

Node Sass does not yet support your current environment: OS X 64-bit with Unsupported runtime (57)

Running this solved the issue:

npm rebuild node-sass