This is reported by Censor.NET citing The Wall Street Journal.
The six-month extension will ensure that the current sanctions continue until next March.
The sanctions include asset freezes and travel bans against 149 people and 37 entities, the European Union announced in a statement. Without the EU action the sanctions would have lifted on Tuesday.
A separate set of European economic sanctions against Russia are in place until the end of January.
European and U.S. officials have said the sanctions should remain in place to increase pressure on Russia to comply with the terms of the second Minsk accord signed last February.
The sanctions are connected both to the Russian annexation of the Crimea as well as its support for separatists fighting the Ukrainian government in the eastern part of the country.
One person, Alexey Mozgovoy, has been removed from the list due to his death. Mozgovoy had been listed since July 12, 2014 as one of the illegal armed gangs' leaders in the east of Ukraine.
Related materials: Sanctions against Russia