changed copyright footer - add it to childtheme?

when I edit the copyright footer in your travelify theme, what do I have to do, that it will be there also after the next theme update? Can I add it into the child theme, but how do I have to do this right?
Thank you very much for your help!

Hi @corsafan,

I hope you are well today and thank you for your question.

You can customize your footer copyrights text by using the solutions posted in the following replies.

Best Regards,