A flyweight championship rematch between pound-for-pound king Demetrious Johnson and Henry Cejudo will serve as the co-main event of UFC 227.

Officials announced the bout between Johnson (27-2-1 MMA, 15-1-1 UFC) and Cejudo (12-2 MMA, 6-2 UFC) on tonight’s UFC 225 broadcast.

UFC 227 takes place Aug. 4 at Staples Center in Los Angeles. The main card airs on pay-per-view following prelims on FS1 and UFC Fight Pass, though the bout order hasn’t been finalized.

Johnson, No. 1 in the latest USA TODAY Sports/MMAjunkie MMA flyweight rankings, first faced Cejudo at UFC 197 in April 2016. “Mighty Mouse” had little trouble finishing Cejudo with knees to the body in under three minutes.

The champ has gone on defend his title three more times since, with his most recent win, a fifth-round submission of Ray Borg at UFC 216 in October, setting the record for most consecutive UFC title defenses at 11.

No. 3 Cejudo has gone just 2-1 since losing to Johnson more than two years ago, but back-to-back wins over Sergio Pettis and ex-title challenger Wilson Reis got him back into title contention.

With the addition, the UFC 227 lineup now includes:

• Champ T.J. Dillashaw vs. Cody Garbrandt – for bantamweight title
• Champ Demetrious Johnson vs. Henry Cejudo – for flyweight title
• Wuliji Buren vs. Bharat Kandare
• J.J. Aldrich vs. Polyana Viana
• Kyung Ho Kang vs. Ricardo Ramos
• Renato Moicano vs. Cub Swanson
• Derek Brunson vs. Antonio Carlos Junior
• Danielle Taylor vs. Weili Zhang
• Pedro Munhoz vs. Alejandro Perez
• Benito Lopez vs. Ricky Simon
• Irene Aldana vs. Bethe Correia
• Beneil Dariush vs. opponent TBA

For more on UFC 227, check out the UFC Rumors section of the site.