Jonathan Liebesman‘s Teenage Mutant Ninja Turtles reboot may be getting pushed back, even though Paramount just released the film’s first full-length trailer a couple days ago.

According to a source connected with production, the film is being pushed back in order to complete necessary reshoots. The source claims that roughly one-third of the film is being completely reshot and that producer Michael Bay is personally overseeing work on the film – which has taken away valuable time from his work on Transformers: Age of Extinction post-production.