How to Fix the "Unsupported Swift Version" Error

August 23, 2019 ยท 1 minute read

So you find a cool, old (anything close to Swift 3) project that just might help you and you download it. But even when you think you’ve updated the language to the newest, hottest version - you come across this crazy error:

Swift Language Version

Here’s how to fix it.

  1. Go into your Project and update the value for “Swift Compiler - Language” to whatever version of Swift you need. Swift Language Version

  2. Go into your Target and do exactly the same thing: Swift Language Version

Here’s where I found how to fix it, because I like to give credit to those that deserve it.

That’s it for today!

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