my gpg key does not conform to rfc4880?

[Brian J. Murrell]

I was told by a developer of a piece of software that my key does not
conform to rfc4800.  He said:

  According to http://tools.ietf.org/html/rfc4880#section-5.2.2
  signatures of version 3 don't have subpackets, which are only
  available in version 4.

  Looks like your key from 1998 is not compliant to RFC4880.

Do I have any recourse other than to generate a new key?

Cheers,
b.

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