A new contract for S-400 missiles will be signed soon, Rosoboronexport head Alexander Mikheyev said at a briefing, the report said, according to the Middle East Monitor.
Russia and Turkey signed their first S-400 supply deal in 2017, prompting the US to impose sanctions on Ankara following claims that the Russian arms would pose a risk to the NATO alliance as well as the F-35 fighter jets in Turkey's fleet.
Turkey received the first shipment of S-400 in July 2019.
Last month, US President Joe Biden said he was committed to maintaining sanctions on Turkey under the Countering America's Adversaries Through Sanctions Act (CAATSA) for buying Russian S-400 missile defenses.