Zoe Saldana is out, and Olivia Munn is stepping in.

Munn, coming off her role as Psylocke in X-Men: Apocalypse, is replacing Saldana in the upcoming action thriller Hummingbird. The film revolves around Munn playing a Black Ops assassin who latest mark is forced her to reveal who she really is.

Saldana had to leave the film because she will begin work on the Avatar sequels for director James Cameron, which are currently in production. John McClain worked on the script and the film is being directed by the duo of Marcus Kryler and Fredrik Akerström.

Mark Gao and Gregory Ouanhon are producing the film under their Fundamental Films banner with Broken Road’s Todd Garner.

More as this develops.

H/T: Deadline