Recently I received the follow message when I did an update:
Signature by key AEEB94E9C5A3B54ECFA4A66AA684470CACCAF35C uses weak digest algorithm (SHA1)
I tried these instructions in order to fix the repository, but without success:
$ sudo apt-key remove ACCAF35C
$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ACCAF35C
$ sudo apt-get update
Do you have any idea how to fix it?
Linux: Ubuntu 16.04.2