The Australian Open will become a 15-day event for the first time in 2024 in an attempt to reduce the number of late-night finishes at Melbourne Park.
The tournament's scheduling was questioned in January after Andy Murray described his 4am finish as a "farce".
Now the Grand Slam has added a day and will start on Sunday, January 14.
A minimum of two matches will be scheduled for day sessions on the main courts, rather than three, to cut the risk of night sessions being delayed.
Tournament director Craig Tiley said: "We've listened to feedback from the players and fans and are excited to deliver a solution to minimise late finishes while continuing to provide a fair and equitable schedule on the stadium courts.