### update-host.js
+**Changing the hostname is unsupported and may be a risky operation, especially if you have already federated.**
If you started PeerTube with a domain, and then changed it you will have
invalid torrent files and invalid URLs in your database. To fix this, you have
-to run:
+to run the command below (keep in mind your follower instances will NOT update their URLs).
```
$ cd /var/www/peertube/peertube-latest