The Russian Anti-Doping Agency said Monday it will not appeal the decision by the Court of Arbitration for Sport in December that upheld the country's ban from this year's postponed Tokyo Olympics and Paralympics.

RUSADA had appealed in 2019 against the sanctions imposed by the World Anti-Doping Agency which barred Russia's flag, anthem and country name from competitions, including the Olympics, for four years. The CAS refused to overturn the ban but cut the suspension to two years through Dec. 16, 2022.

Russian Olympic Committee building is seen in Moscow, Russia after The World Anti-Doping Agency (WADA) handed a four-year ban to Russia for major sporting events including the 2020 Tokyo Olympics and 2022 World Cup on December 09, 2019. (Anadolu Agency/Getty/Kyodo)

"RUSADA has made the decision not to challenge the CAS award before the Swiss Supreme Court," its statement said. "RUSADA considers that this chapter has now been closed and is committed to working with WADA with a view to fully restoring RUSADA's membership status."

The suspension means only Russian athletes who meet certain criteria will be permitted to compete as neutral athletes at the Tokyo Olympics and Paralympics or the Beijing Winter Games in 2022.

RUSADA was initially suspended in 2015 for its role in the state-sponsored doping program that targeted various high-level competitions, including the 2014 Winter Olympics hosted by Russia in Sochi.

The nation was allowed to compete at the 2016 Summer Olympics in Rio de Janeiro but was banned from taking part in the Paralympics.

Following the suspension of the Russian Olympic Committee in 2017, Russian athletes cleared of doping were allowed to participate at the Pyeongchang Games in South Korea under the banner "Olympic Athlete from Russia."