FYI for anyone using apt, we recently renewed our gpg keys (around Nov 19, 2021), so please find our new public key here: https://releases.algorand.com/key.pub
curl -O https://releases.algorand.com/key.pub
sudo apt-key add key.pub
GPG key Renewal
If you are using unattended-upgrade, do not forget to run:
sudo apt-get update
after the above commands.
Then check that algod version is at least 3.2.1:
$ algod -v
12885032961
3.2.1.stable [rel/stable] (commit #b6cbbf34)
go-algorand is licensed with AGPLv3.0
source code available at https://github.com/algorand/go-algorand