Coturn possible with non-static ip?

I installed coturn succsessfully and it works when I configur the listening-ip in the turnserver.conf file to my ip. But now my question is, (operating my Server from home) what happens when my non-static ip-changes? How can I set the listeningport to update automatically?
When I comment the line (#) the server dont works.

Anyone an Idea?

You will need to get a dynamic DNS provider, something like You can get a free account for testing or personal use. I have a similar setup and it works without an issue.