A Revolutionary Court in Tehran judiciary spokesman Gholam Hossein Mohseni Ejehi made the announcement in remarks carried on the state news agency, IRNA.
Shroud was released from prison last year on humanitarian grounds. Her fiancé, Shane Bauer, and friend Josh Fattal remain in prison. All three are Cal grads.
Shourd, from Oakland, hasn't said if she plans to return for the trial which could begin as early as Feb. 6. The Associated Press sent an email to her Monday morning asking for a comment, which was not immediately answered.
When Shourd left prison, she first posted $500,000 bail. That bail would be lost if she does not return.
Tehran prosecutors claim the three Americans illegally crossing into Iran. They also face espionage charges.
Also Monday, several well-known people including actor Sean Penn, American academic Noam Chomsky and retired Archbishop Desmond Tutu of South Africa, issued an appeal for Iran to release the two men. "The time for Shane and Josh's freedom is overdue and we implore you to allow them to go free and return to their families," the statement from the group said.