Kaleme quoted Farideh Gheirat as saying on April 18 that he was informed of the sentence, issued by the 26th branch of Tehran's Revolutionary Court, on April 16.
Gheirat said the charges against Khosravani included "assembly and collusion against the national security" and "spreading propaganda against the regime."
Khosravani was taken into custody in Tehran in November. She was held in solitary confinement in Ward 209 of Tehran's Evin prison, which is run by the Intelligence Ministry.
After 132 days in incarceration, Khosravani was released in March on bail of around $600,000.
Khosravani used to work for several reformist newspapers, including "Sharq." Tehran prosecutor Abbas Jafari Dolatabadi said at the time of her arrest that she was charged with acting against national security.
Khosravani's mother, Azam Afsharian, however, previously denied the charges against her daughter in an interview with RFE/RL's Radio Farda. She also said Khosravani had been unemployed for some time before she was arrested.