# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2019-06-06 21:53:10 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1136752920458866690) In reply to: [@keefmoon](http://twitter.com/keefmoon/status/1136749113758949379) Is SwiftUI using Swift 5.1? Because that might be the blocker. Swift Playgrounds is using Swift 5.0 currently.