Multiple outlets confirmed the pairing after Kunitskaya announced the bout on social media. The bantamweights were supposed to square off at UFC Fight Night 173 on Aug. 1 before being postponed to UFC Fight Night 174 the following week. The bout was then scrapped due to visa issues for Vieira.
A location and headliner for the Feb. 20 event has yet to be announced.
Kunitskaya remained on the UFC Fight Night 174 card, where she outpointed Julija Stoliarenko. The former Invicta FC title holder has been victorious in three of her last four promotional appearances, also earning victories against Marion Reneau and Lina Lansberg during that stretch.
Vieira, meanwhile, made her lone appearance of 2020 at UFC 253, earning a three-round verdict against Sijara Eubanks. The 29-year-old Nova Uniao product has won five of her six outings within the Las Vegas-based organization.