RKE ssh problems during install

I’ve got RancherOS installed on 8 nodes and can ssh to all of them just fine but when I go to deploy RKE it fails with

Unable to negotiate with port 22: no matching cipher found. Their offer: 3des-cbc,blowfish-cbc

and I’m unable to ssh to the nodes after. It seems odd that it’s only offering weak ciphers. Is RKE possibly trying to blacklist the ciphers but accidentally only enabling them instead?

RancherOS v1.5.0
RKE v 0.1.15