The agency said the space debris that will approach the ISS at 13:16 GMT "does not pose a threat".
"The probability of a collision with the ISS is zero, no correction manoeuvre is required", Roscosmos tweeted.
The statement was issued after NASA yesterday announced that there was a threat of an unidentified object approaching the station by up to 4.8 km [3 miles] on Thursday at 13:16 GMT. Roscosmos, however, remained sceptical, saying that a collision is not probable.
This photo provided by NASA shows the International Space Station as seen from Space Shuttle Atlantis during mission STS-106, which delivered supplies and performed maintenance in September 2000.
© AP Photo / NASA
The station was hit by space debris earlier this year. A piece of space junk struck the Canadian remote robotic system aboard the ISS, but the incident did not affect the operation of the device.