The actress, 30, filed a request for dismissal of the divorce paperwork, according to The Blast.
Rivera originally filed for divorce last November.
According to E! online, "They want to make it work for the sake of their son."
Dorsey, 34, and Rivera first dated in 2010 before going their separate ways while she starred on "Glee".
They got married in July 2014, just three months after her engagement to rapper Big Sean ended.