Set for July 15 from the Valley View Casino Center, the main card is expected to air on FOX Sports 1 with a headline bout between Frank Mir and Todd Duffee.
Jouban (11-3) is coming off a knockout victory over Richard Walsh from UFC 184, while Dwyer (8-2) earned a KO over William Macario in his most recent bout.
Below is the current lineup:
Heavyweight: Frank Mir vs. Todd Duffee
Lightweight: Josh Thomson vs. Tony Ferguson
Welterweight: Sean Strickland vs. Igor Araujo
Bantamweight: Scott Jorgensen vs. Manny Gamburyan
Welterweight: Alan Jouban vs. Matt Dwyer