[Arnavion]

Both those licenses require you to add the license text as a file to the codebase. Eg see the "How to apply the Apache License to your work" section in the Apache license link that you have there.

Since it's dual-licensed you can add one as LICENSE-MIT and the other as LICENSE-APACHE.

[o8vm]

Oh, I see! Thank you very much. I'll add both later!