A U.S. appeals court upheld a major antitrust ruling against Google, siding with Epic Games and ordering sweeping Play Store reforms to boost app market competition.

Alphabet’s Google on Thursday failed to persuade a U.S. appeals panel to overturn a jury verdict and federal court order requiring the technology company to revamp its app store Play.

Alphabet Inc.’s Google lost its appeal of a judge’s order requiring an overhaul of the technology giant’s app store policies in an antitrust case filed by Fortnite-maker Epic Games Inc.The ruling by the 9th US Circuit Court of Appeals on Thursday means the Google Play store will need to lift restrictions that prevent app developers from setting up rival marketplaces and billing systems.