Fast-food workers from Birmingham, Alabama are suing their state legislature after it passed a law that put a stop to their expected pay raise.

Nine months ago, the workers scored a major victory as Birmingham became the first city in the Deep South to pass a law enacting a higher minimum wage. At the time, the city council agreed to increase the local minimum wage from $7.25 to $8.50 by July 2016 and to $10.10 by July 2017. The victory was short-lived as the state legislature passed a law earlier this year, prohibiting cities from increasing their local minimum wage, voiding Birmingham’s ordinance.