"The expedition of Sergey Prokopyev, Dmitry Petelin and Francisco Rubio to the ISS is being extended. They will return to Earth on Soyuz MS-23," Roscosmos said.

The Dec. 14 leak stemmed from a tiny puncture in the external radiator of the Soyuz MS-22 capsule which is currently docked to the ISS and was due to bring the three crew members back to Earth in March.

(Reporting by Reuters. Writing by Mark Trevelyan; editing by Guy Faulconbridge)