Kathryn Hahn, Janelle Monáe and Dave Bautista will also star in the sequel.
The twosome join fellow franchise newcomers Kathryn Hahn, Janelle Monáe, Dave Bautista and Edward Norton, while Daniel Craig will reprise his role as celebrity detective Benoit Blanc for another whodunnit.
Topping an ensemble cast comprised of Ana de Armas, Chris Evans, Jamie Lee Curtis, Toni Collette, Christopher Plummer, Michael Shannon and LaKeith Stanfield is no easy feat. But if you're going to attempt it, these are the sort of exciting, unexpected names you pick.
Character and plot details are currently being kept under wraps, but Hudson and Monáe reacted to the news on social media, appropriately, with a series of knife emojis.
With his cast assembling ahead of a summer shoot in Greece, Johnson is manifesting the hopes he shared ahead of Knives Out's premiere in 2019.
"We had so much fun doing this. If we could get together every few years and do a new Benoit Blanc mystery," he told ET. "Just do, like, a new cast, new location, new mystery about a whole new set of things, I think that would be a blast."
While the original Knives Out film premiered in theaters -- becoming a box office hit and earning an Oscar nomination for Best Original Screenplay -- ET previously reported that its sequels will stream on Netflix.