Attorneys for the House Judiciary Committee and Biden administration “have reached an agreement in principle on an accommodation” for former White House counsel Don McGahn’s congressional testimony, the parties said in a filing Tuesday evening.

It’s unknown exactly what agreement has been reached on McGahn’s testimony, according to the filing. However, the update is a significant breakthrough in a case that has worked its way through the courts for nearly two years. The U.S. Court of Appeals for the D.C. Circuit was set to hear en banc arguments next week in the suit for the second time. Tuesday’s filing states that the attorneys will ask the court to scrap those arguments.