Wyo. Stat. § 31-9-207 (2026)

increase.
     (a) The security required under W.S. 31-9-202, 31-9-203
and 31-9-205 through 31-9-209 shall be in such form and in such
amount as the division may require but in no case in excess of
the limits specified in W.S. 31-9-202. The person depositing
security shall specify in writing the person on whose behalf the
deposit is made and, at any time while the deposit is in the
custody of the division or state treasurer, the person
depositing it may, in writing, amend the specification of the
person or persons on whose behalf the deposit is made to include
an additional person or persons. A single deposit of security
is applicable only on behalf of persons required to furnish
security because of the same accident.

     (b) The division may reduce or increase the amount of
security ordered in any case within six (6) months after the
date of the accident if, in its judgment, the amount ordered is
excessive or insufficient. If the security originally ordered
has been deposited the excess deposited over the reduced amount
ordered shall be returned to the depositor or his personal
representative forthwith, notwithstanding W.S. 31-9-208.