Two state of Illinois employees who do not want to pay dues to the American Federation of State, County and Municipal Employees (AFSCME) union plan to take their case all the way to the U.S. Supreme Court.

The Seventh Circuit U.S. Court of Appeals on Tuesday dismissed the lawsuit brought by Mark Janus and Brian Trygg, who argue that their First Amendment rights are being violated by being forced to pay dues to a union they don’t want to be join.