The FEDOR (Final Experimental Demonstration Object Research) robot on its way to the ISS on a planned two-week mission to support the crew and test its skills.
The docking process, originally planned for 0530 GMT, failed due to issues related to the automatic docking system, news agency, Interfax added, cited NASA TV as saying.
The spacecraft is currently 96 meters away from the station and officials plan to attempt docking again on Monday morning, RIA reported, citing Russia's flight control center.
The Skybot F-850 is the first humanoid robot sent to space by Russia. NASA sent humanoid robot Robonaut 2 to space in 2011 to work in hazardous environments.
FEDOR is the size of a human adult and can emulate movements of the human body.
The ISS is a joint project of the space agencies of the United States, Russia, Europe, Japan and Canada.