Former champions Andrei Arlovski and Frank Mir are now officially on for UFC 191. The promotion made the announcement during UFC 190 Saturday night.

Set for September 5 from Las Vegas, the card features a main event between flyweight champion Demetrious Johnson and John Dodson.

Arlovski (24-10) has picked up five straight wins, including three inside the Octagon, to position himself as a title-contender. That includes a May finish of Travis Browne and a knockout of Antonio “Bigfoot” Silva.

Mir (18-9) has had a similar career resurgence, knocking out Todd Duffee in just 1:13 this past July. He also finished Silva in February.

Below is the current lineup:

UFC Flyweight Championship
Demetrious Johnson (c) vs. John Dodson

Heavyweight: Frank Mir vs. Andrei Arlovski

Female Strawweight: Paige VanZant vs. Alex Chambers

Light Heavyweight: Anthony Johnson vs. Jimi Manuwa

Bantamweight: Francisco Rivera vs. John Lineker

Lightweight: Joaquim Silva vs. Nazareno Malegarie

Light Heavyweight: Jan Blachowicz vs. Corey Anderson