Rudnitsky, a University of Southern California alum, is joining the iconic late-night sketch show as a featured player in the upcoming season, and the 25-year-old comic couldn't contain his excitement when he shared the news on Twitter.
"Been dreaming of this moment my whole life. What an honor," Rudnitsky wrote. "Can't wait to begin my journey at #SNL."
The Harrington Park, New Jersey native -- who won the Laugh Factory's Laugh Bowl college comedy competition in 2012 -- has been showing off his sketch comedy skills on his YouTube channel.
Rudnitsky is the only new addition to the cast for the new season so far and as of yet no current cast members have announced their departures, which could make for one of the most stable season-to-season transitions in years.
SNL's 41st season kicks off Oct. 3 with Miley Cyrus serving as host for the second time. Amy Schumer is set to host for the first time on Oct. 10.
Former cast member Tracy Morgan returns to the SNL stage on Oct. 17 -- which also marks Morgan's return to performing after surviving an auto accident in June 2014 that required extensive physical rehabilitation and claimed the life of a passenger in Morgan's vehicle.