Cannot upload a 4096 bit sized key (Whoa: Error: cannot have 2 primary keys)

Hi there,

As stated in the titled I get the error message "Whoa: Error: cannot have 2 primary keys" if I want to upload my pubkey. It seems you have no support for keys with more than 2048 bit sized keys and therefore I cannot use keybase.io.
Maybe there is a workaround to this isssue?

Thanks in advance,
Michael

Start by reproducing the upload failure with a 4096-bit public key and compare it with a supported key size. Trace the handling of the “cannot have 2 primary keys” error; done means the 4096-bit key uploads successfully without breaking existing public-key uploads.

Written by the indexing model from the issue text.