Does guacd support later SSH host keys?

Before I go rebuilding my current v1.3 guacd container from the official Guacamole docker image, can anyone confirm if the linuxserver.io version supports later SSH host keys? At the moment whenever it tries to SSH to newer servers it gets blocked with the SSH server reporting from the gaucd connection with:

Oct 08 10:46:26 pikvm sshd[4841]: Unable to negotiate with 192.168.1.70 port 50508: no matching host key type found. Their offer: ssh-rsa,ssh-dss [preauth]

This happens with Fedora 34 server, but fortunately you can revert it to Fedora 32 security settings with a simple, though of course that isn’t recommended.