Roscosmos says the unmanned Progress M-20M spacecraft moored at the station Sunday about six hours after its launch from the Baikonur Cosmodrome in Kazakhstan. The docking was performed in automatic mode.
The agency says the ship has delivered about 2.4 metric tons of supplies to the space outpost, including fuel, food, water and scientific equipment.
The 2011 retirement of the U.S. shuttle fleet has left Russia's Soyuz spacecraft as the sole means to ferry crews to and from the space outpost. The unmanned cargo version of the Soyuz, the Progress, delivers the bulk of station supplies.