expired gpg key on deb.odroid.in

[bitterandstout]

noticed this the other day while looking for packages. Anyone know if hardkernel will respond to the email address listed below?
apt error:
Err:1 http://deb.odroid.in/c2 bionic InRelease
The following signatures were invalid: EXPKEYSIG 5360FB9DAB19BAC9 Mauro Ribeiro (mdrjr) <mauro.ribeiro@hardkernel.com>

curl check:
curl http://deb.odroid.in/c2/dists/bionic/InRelease | gpg --keyring /etc/apt/trusted.gpg --verify
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 2423 100 2423 0 0 15238 0 --:--:-- --:--:-- --:--:-- 15238
gpg: Signature made Thu Dec 5 02:01:18 2019 PST
gpg: using RSA key 5360FB9DAB19BAC9
gpg: Good signature from "Mauro Ribeiro (mdrjr) <mauro.ribeiro@hardkernel.com>" [unknown]
gpg: Note: This key has expired!
Primary key fingerprint: 3E6B 640B 3181 7272 BD9A 1535 4047 B348 23AE 12F8
Subkey fingerprint: 9A96 B9C5 7B7D E129 5A68 93F1 5360 FB9D AB19 BAC9

[mad_ady]

It's already been discussed in a different thread. Here is how you can trust the new key:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys AB19BAC9

[bitterandstout]

cheers.