The Dane has raced with the American team since 2017, barring a year off in 2021, with memorable moments including an eighth-place finish at the Austrian Grand Prix earlier this term.
Now, Haas will be rolling with outgoing Alpine star Esteban Ocon and Brit sensation Oliver Bearman for 2025.
They currently sit seventh in the constructors' standings, but will be setting their sights higher in future after announcing a multi-year deal with Toyota, who will make their return to F1 for the first time since 2019.
Meanwhile, Magnussen is looking to the future, as he attended the Energy Tech Summit in Berlin as a guest speaker.
Sat alongside Formula E CEO Jeff Dodds, fans were quick to speculate on his potential future in electric motorsport.
One user excitedly commented: "Magnussen in Formula E?," while Brazilian racer Lucas di Grassi, Formula E champion in 2017, commented: "Put him in".