Update to 0.74.2 not starting

Hi all,

when I try to update Hassio to 0.74.2 from 0.73.1 I get the following error in the log, I don’t believe I have changed anything since I updated to 0.73.1, so am at a loss as to why I am unable to download the new version.

18-07-30 23:41:27 ERROR (SyncWorker_9) [hassio.docker.interface] Can't install homeassistant/raspberrypi3-homeassistant:0.74.2 -> 500 Server Error: Internal Server Error ("Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io on read udp> i/o timeout").

Any ideas?

A second full modem and router restart solved it.