ESPN Deportes was first to report the booking. UFC 264 takes place on July 10 at the T-Mobile Arena in Las Vegas and is headlined by a trilogy bout between Dustin Poirier and Conor McGregor.
Aldana last appeared at UFC on ESPN 16, where she suffered a five-round decision loss to Holly Holm in Abu Dhabi on Oct. 3. Prior to that defeat, the Lobo Gym MMA product had been victorious in five of her previous six Octagon appearances.
Kunitskaya enters the matchup have won four of her last five outings within the Las Vegas-based promotion. Most recently, the 31-year-old Russian outpointed Ketlen Vieira at UFC Fight Night 185 on Feb. 20.