TL;DR: One-liner provided by Ryan Marvin: curl https://raw.githubusercontent.com/Homebrew/homebrew-cask/<commit-hash>/Casks/<formula>.rb > $(find $(brew --repository) -name <formula>.rb) && brew reinstall <formula> Problem Did you know it’s possible to install an older version of a homebrew package or formula? Previously, you would do this by installing an older formula URL: