WebService EmploymentType Enum

I am working with the Dyncamics GP 2010 Web Services to create Employees in GP from an external application.

I am creating the employees successfully, however the EmploymentType enum that is auto-generated only has 5 possible values, which is a problem because GP currently has 6 potential values.

Is there a way to update the WebService reference to load the correct number of enum values, or is there another way to supply my Employee object with an EmploymentType?