Misty Upham has joined the cast of the Weinstein Co. ensembler “August: Osage County,” starring Meryl Streep and Julia Roberts.

John Wells is directing a cast that also includes Abigail Breslin, Chris Cooper and Sam Shepard.

The adaptation of Tracy Letts’ play revolves around the Weston family, whose members have to overcome certain differences when their alcoholic patriarch goes missing.

Upham would play a college student who comes to work for Streep’s character.

Jean Doumanian and Harvey Weinstein will produce.

Best known for her work in the pic “Frozen River,” Upham recently wrapped production on the indie “Jimmy Picard,” starring Benicio Del Toro. She is repped by Kerner Management Associates.