NEW YORK — Serious theater fans have a reason to suddenly freak out: Ian McKellen and Patrick Stewart will team up on Broadway this fall in two of the most iconic plays of the 20th century.

Producers announced Jan. 24 that Stewart and McKellen will star in Harold Pinter’s No Man’s Land and Samuel Beckett’s Waiting for Godot in repertoire under the direction of Sean Mathias.

The theatre, performance dates, two supporting actors and schedule will be announced later. Stewart and McKellen starred in a production of Waiting for Godot in London’s West End in 2009. Prior to Broadway, they’ll tackle No Man’s Land in an as-yet-unspecified out-of-town tryout this summer.

Mathias said all three men struggled to make with Waiting for Godot as honest and realistic as possible — an approach they’ll likely replicate with Pinter’s play. “What we tried to do, with so much effort, was make it real. Make them human beings, compassionate, funny, flawed and vulnerable and cocky — all the things human beings are,” Mathias said. “We never wanted to make it esoteric. I’m sure this is how we will approach the Pinter as well.”

Stewart and McKellen first worked together in 1977 in Tom Stoppard’s Every Good Boy Deserves Favour. They’ve also starred in the X-Men movie franchise as Professor Xavier and Magneto.