Officials have added welterweights Josh Burkman and Dong Hyun Kim to the Memorial Day Weekend UFC 187 event.

Set for May 23 from Las Vegas, the card boasts two title fights. First, Chris Weidman defends his middleweight belt vs. Vitor Belfort, while Jon Jones and Anthony Johnson collide for the light heavyweight title in the main event.

Burkman (28-11) returned to the Octagon in January and was defeated by Hector Lombard. However, the decision was changed to a no-contest after Lombard failed his post-fight drug test.

The former World Series of Fighting champion is 5-1 with the one no-contest since 2011.

Kim (19-3-1) had his four-fight win streak snapped last August by Tyron Woodley. He was coming off back-to-back finishes of John Hathaway and Erick Silva.

Below is the current lineup:

UFC Light Heavyweight Championship
Jon Jones (c) vs. Anthony Johnson

UFC Middleweight Championship
Chris Weidman (c) vs. Vitor Belfort

Lightweight: Donald Cerrone vs. Khabib Nurmagomedov

Heavyweight: Travis Browne vs. Andrei Arlovski

Flyweight: Joseph Benavidez vs. John Moraga

Welterweight: Dong Hyun Kim vs. Josh Burkman

Flyweight: John Dodson vs. Zach Makovsky

Lightweight: Islam Makhachev vs. Leo Kuntz

Female Strawweight: Rose Namajunas vs. Nina Ansaroff

Flyweight: Justin Scoggins vs. Josh Sampo

Welterweight: Sean Spencer vs. Mike Pyle