Russia's Space Agency, Roskosmos, says its plan to try to send a manned flight to the moon has been set back from 2030 to 2035 as a result of the country's "economic situation."
The draft federal space program presented by Roskosmos on January 20 says the new budget for the project is 1.4 trillion rubles ($17.7 billion).
The planned flight originally had been scheduled for 2030 with a budget of 2 trillion rubles ($25.3 billion).
Moscow wants to launch a heavy-lift rocket from the Vostochny spaceport currently under construction in the Far East.
But the project has been plagued by reports of corruption.
Workers went on strike there in the spring of 2015 over unpaid wages and were compensated only after appealing directly to Russian President Vladimir Putin.
Based on reporting by Interfax and RIA