The U.S. steelmaker said a federal interagency panel had granted an extension to June 18 for the requirement in President Biden’s executive order that the parties permanently abandon the transaction.

The Biden administration has given U.S. Steel and Japan’s Nippon Steel an extra six months to ditch their merger, keeping the deal alive as litigation unfolds over whether a national security panel’s review of it was tainted by political considerations.

U.S. Steel and Japan’s Nippon Steel sued the United States government on Monday in a last-ditch attempt to revive their attempted merger after President Biden blocked it last week on the basis that the transaction posed a threat to national security.