Wyo. Stat. § 41-9-257
The court may, upon the petition of the commissioners, authorize them to refund any lawful indebtedness of the district now existing or which may hereafter be incurred by taking up and canceling all or a part of its outstanding notes and bonds, as fast as they become due or before, if the holders thereof will surrender the same, and issue in lieu thereof new notes or bonds of the district, payable in a time as the court deems proper, in an amount sufficient to retire all notes and bonds of the district then outstanding and the unpaid accrued interest thereon, together with an amount as the commissioners of the district deem necessary to provide for possible future defaults and delinquencies in the payment of assessments. For the purpose of providing funds to pay the refunding bonds with interest thereon, the commissioners may levy assessments against the land in the district, but not in excess of the benefits assessed. In the alternative the commissioners may, if they deem it advisable, issue refunding bonds in an amount sufficient only to retire all notes and bonds of the district then outstanding and the unpaid accrued interest thereon, and may, if they desire to provide a fund to provide for possible defaults and delinquencies in the payment of assessments, levy from year to year assessments against the land in the district for these purposes, but not in excess of the benefits assessed against the same.
W.S. 41-9-257