Cal. Civ. Proc. Code § 533

In any action, the court may on notice modify or dissolve an injunction or temporary restraining order upon a showing that there has been a material change in the facts upon which the injunction or temporary restraining order was granted, that the law upon which the injunction or temporary restraining order was granted has changed, or that the ends of justice would be served by the modification or dissolution of the injunction or temporary restraining order.