WARNING:turrishw:unsupported TOS version (on omnia): 3

Hello,

I have a Turris (not Omnia the first generation) which I use normally (no flashing, no updates or big configuration chages). However I see many of these warnings in the logs recently:

WARNING:turrishw:unsupported TOS version (on omnia): 3

I haven’t opted in testing repositories or anything like that, I assume I should be running stable and supported OS. What’s wrong?