This is no laughing matter.

Heidi Gardner’s contract with “Saturday Night Live” was not renewed for Season 51, an insider exclusively tells The Post.

“It’s time for a new cast,” the insider said.

The Post has reached out to Gardner’s rep and “SNL” for comment. 11

The 42-year-old was a staple on the sketch comedy series for the last eight seasons.

On Aug. 28, The Post confirmed that Gardner was leaving the show amid the major cast shake-up that has seen Michael Longfellow, Devon Walker and Emil Wakim also announce their exits . Five newcomers have since joined Season 51.

Gardner, unlike the trio, has not publicly addressed her departure. 11

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Dana Carvey, who returned to “SNL” last season to play Joe Biden, shared intel about Gardner’s exit from the show on Wedn

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