Ubuntu Server 22.04 - NextDNS update error

When I try to update sudo apt update I get this error

...
Hit:5 https://repo.nextdns.io/deb stable InRelease
Err:5 https://repo.nextdns.io/deb stable InRelease
  The following signatures were invalid: EXPKEYSIG XXXXXXXXXXXXXXXX NextDNS <team@nextdns.io>
...

...
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://repo.nextdns.io/deb stable InRelease: The following signatures were invalid: EXPKEYSIG XXXXXXXXXXXXXXXX NextDNS <team@nextdns.io>
W: Failed to fetch https://repo.nextdns.io/deb/dists/stable/InRelease  The following signatures were invalid: EXPKEYSIG XXXXXXXXXXXXXXXX NextDNS <team@nextdns.io>
W: Some index files failed to download. They have been ignored, or old ones used instead.

Crossed out EXPKEYSIG just in case.

Would you please help me how to solve this?

Thanks in advance!