Not updating after upgrade to 10

Trisquel 10 is not updating since my recent upgrade. If I run sudo apt update, right now it is showing 11 available updates. But the software updater is not notifying me of these.

I had a problem during my upgrade from 9 to 10 and had to use Synaptic to complete the process. I suspect the update settings are not correct. Any advice would be appreciated. Thanks.