MINNEAPOLIS — A federal appeals court has put a drive to unionize Minnesota home day care workers on hold pending the outcome of a similar case before the U.S. Supreme Court.

The Eighth U.S. Circuit Court of Appeals issued its opinion Thursday.

Opponents of a law to unionize day care workers had appealed after Chief U.S. District Judge Michael Davis dismissed their lawsuit, saying it was premature. Davis refused to grant an injunction that would have kept day care workers from unionizing while the appeal was pending.

But the appeals court granted that injunction Thursday, pending a Supreme Court ruling on a similar law in Illinois.

AFSCME Council 5, the union seeking the election, dismissed the injunction as a “temporary road block” and said it won’t stop the union from organizing.