Taxonomy and Variables

I have a variable set (version) in my site.yaml to specify the content version, and I would like to use that variable in my taxonomy, but I am getting an error. Is this possible?

title: Introduction
taxonomy:
    category: ['docs']
    effective: ['in-effect']
    audience: ['general-users']
    version: {{site.version}}

@crusnac, AFAIK, Twig expressions in taxonomy values do not get parsed.