https://circleci.com/docs/ios-builds-on-os-x/ says 1.64, but it’s 1.66.
Thanks for finding that. I will look into it. I also don’t want to miss the chance to advertise that… :drumroll: our docs are now open-sourced!
This guide as well as the rest of our docs are open-source and available on GitHub. https://github.com/circleci/circleci-docs/blob/master/jekyll/_docs/ios-builds-on-os-x.md