In February 2017, Netflix announced that Kate McKinnon was cast in the role of Fiona Felicity Frizzle, the younger sister of Ms. Frizzle, now Professor Frizzle, again played by Lily Tomlin. By this point the title of the series had been changed to "The Magic School Bus Rides Again". Lin-Manuel Miranda of "Hamilton" performs the theme song. The series began on Netflix on September 29, 2017.