Wron Update offered

This morning I got a message reading like this:

Nextcloud 10.0 (stable)
Entwickelt von der Nextcloud community, der Quellcode ist lizensiert unter AGPL-Lizenz.
Eine neue Version ist verfügbar: ownCloud 9.1.1

Two interesting things.

I run Nextcloud 10.0 (as update via ownCloud 9, Nextcloud 9, Nextcloud 10) and the offer is that I get an update message telling me 9.1.1 is available

And the update is for ownCloud (not Nextcloud), maybe I have to adjust the update channel somewhere?

Thanks for any hints.