The animated comedy, voiced by Will Arnett and Aaron Paul, will return for a further 12 episodes on the streaming service, said The Hollywood Reporter.
The series is about a horse who was once a television star on the fictional '90s show Horsin' Around.
Now, 20 years later, his memoir is being ghost-written and he is failing to hold on to acting jobs that his agent is securing for him.
'BoJack Horseman' traverses the celebrity-fuelled world of Hollywood, where the horse runs into bizarre characters voiced by Alison Brie, Paul F Tompkins and Amy Sedaris.