Unable to update to lastest version

Is there something wrong with the update system?

19-12-03 07:15:54 INFO (MainThread) [hassio.homeassistant] Update Home Assistant to version 0.102.3
19-12-03 07:15:54 INFO (SyncWorker_7) [hassio.docker.interface] Update image homeassistant/intel-nuc-homeassistant:0.102.2 to homeassistant/intel-nuc-homeassistant:0.102.3
19-12-03 07:15:54 INFO (SyncWorker_7) [hassio.docker.interface] Pull image homeassistant/intel-nuc-homeassistant tag 0.102.3.
19-12-03 07:15:54 ERROR (SyncWorker_7) [hassio.docker.interface] Can’t install homeassistant/intel-nuc-homeassistant:0.102.3 -> 500 Server Error: Internal Server Error (“Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io: Temporary failure in name resolution”).
19-12-03 07:15:54 WARNING (MainThread) [hassio.homeassistant] Update Home Assistant image fails

I don’t think It’s a local dns issue, I run hass.io on a nuc on top of Ubuntu.
I can resolve dns in Ubuntu.

I wasn’t able to update recently - never found out why nor have I dared try again

I was finally able to update after changing the DNS to the google ones.
Not sure why this is happening.

Can you tell me where/how you did this?
I believe I have the same setup as you (and the same issue).

Nevermind. Found it. For someone else:
In Ubuntu console:
sudo nano /etc/resolv.conf
Change nameserver to

I guess that still works but these days on Ubuntu you need to use netplan to set them:

username@haserver:~$ cat /etc/netplan/01-network-card.yaml
        version: 2
        renderer: networkd
                        dhcp4: no
                        addresses: [192.168.xxx.xxx/xx]
                        gateway4: 192.168.xxx.xxx
                                addresses: [,]