Pete Davidson skipped the “Saturday Night Live” after-party at L’Avenue at Saks because of bad blood with his castmates, Page Six has confirmed.

Sources say that co-stars including Chris Redd, Aidy Bryant and Bowen Yang were still fuming at the party about Davidson’s recent interview in which he bashed the cast, saying they treat him like he’s “dumb.”

“What he said during his interviews has made a lot of folks at NBC upset, and they don’t want to work with him,” a source told us.

But this week’s host, John Mulaney, who’s a close pal of Davidson’s, talked at the party “about how ‘SNL’ can be very cutthroat sometimes,” the source said.

“And while Pete is not doing himself any favors right now, the cast should take care of each other.”