Digital de-aging was applied to Robert De Niro, Joe Pesci and Al Pacino for The Irishman, which is the main reason why the budget rose as high as it did. The three-hour-long movie also stars Bobby Cannavale, Harvey Keitel, Stephen Graham, Domenick Lombardozzi, Ray Romano and Sebastian Maniscalco, among many others.
Article source: https://www.cinemablend.com/news/2481746/joe-pesci-had-to-be-coaxed-into-returning-to-acting-for-the-irishman