When “The Big Bang Theory” ends its 12-season run in May, not only will the nerd-centric sitcom go out as the season’s highest-rated comedy, it will also have broken a TV record that’s been held since the 1990s.

A CBS press release sent out on Wednesday reveals that the show has just started production on its 276th episode, which officially makes “The Big Bang Theory” the longest-running multi-camera comedy in television history.

The previous record-holder: “Cheers”, which produced 275 episodes during its 11-season run from 1982-1993.

RELATED: ‘The Big Bang Theory’ Cast Reveal Who Is Most Emotional About The Show Ending

Following the table read for the 276th episode, the show’s cast, crew and producers celebrated on the set with cupcakes, and posed for photos to mark the momentous milestone.

Warner Bros. Television
Warner Bros. Television

Meanwhile, the show hosted another celebration earlier this year when the soundstage where the show is filmed — Stage 25 on the Warner Bros. lot in Los Angeles — was officially renamed “The Big Bang Theory Stage.”

Warner Bros. Television
Warner Bros. Television

Prior to Sheldon and the gang putting down roots, Stage 25 was used for such famed films as “Blade Runner”, “Bonnie and Clyde” and “Casablanca”.

This is only the fifth time that Warner Bros. has renamed a soundstage on its lot: in 2004, Stage 24 was dubbed “The Friends Stage”; Stage 11 was named “The ER Stage” in 2011; Stage 1 became “The Ellen DeGeneres Show Stage” in 2015 to commemorate its 2,000th episode; and Stage 26 was renamed “The Two and a Half Men Stage” that same year.

RELATED: Kaley Cuoco Knows She Will Be ‘Crying The Entire Time’ During ‘Big Bang Theory’ Finale Taping

The one-hour series finale of “The Big Bang Theory” will air on May 16.

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This Week On TV: March 25-31