Mich. Comp. Laws § 600.5521

Sec. 5521. (1) Except as provided in sections 5519 and 5523, prospective relief ordered in a civil action concerning prison conditions shall be terminable upon the motion of a party or intervenor as follows: (a) Two years after the date the court granted or approved the prospective relief. (b) One year after the date the court entered an order denying termination of prospective relief. (c) In the case of an order issued on or before the date the amendatory act that added this chapter is enacted into law, 2 years after that date of enactment. (2) This section does not prevent the parties from agreeing to terminate or modify relief before the relief is terminated under subsection (1).