On August 26, an Iranian court rejected an appeal to reduce Abedini's eight-year prison sentence.
He has been jailed in Iran since September 2012 on charges that he attempted to undermine state security by creating a network of Christian churches in private homes.
He was put on trial in January and sentenced to prison.
Abedini's wife, Naghmeh, told RFE/RL that her husband should be released immediately.
The U.S. State Department has in the past called for Abedini's release.