Tony Award winner Tonya Pinkins has replaced Niecy Nash in ABC’s upcoming limited series Women of the Movement, Deadline reports.

Inspired by Devery S. Anderson’s book Emmett Till: The Murder That Shocked the World and Propelled the Civil Rights Movement, the project centers on Emmett’s mother Mamie Till-Mobley (played, as previously announced, by current Tina Tony nominee Adrienne Warren) and her life spent seeking justice for her son, a 14-year old boy murdered in 1955 in the Jim Crow South.

Pinkins will play Emmett Till’s grandmother, Alma.

The six-episode series is from creator-writer Marissa Jo Cerar and is executive produced by Jay-Z, Will Smith, and Aaron Kaplan. Filming begins this month in Mississippi.