Adam,
You are missing the point.
Versioning has sub-version numbers, and you should be using those.
Eg. 6.0.2524.1375
and
6.0.3214.4892
or simply:
6.0.0.135
6.0.0.136
It's all still V6.0, but the sub-versions identify the currency of release.
this is pretty standard. Can you please start doing that?