Oil prices rose on Monday after top exporters Saudi Arabia and Russia reaffirmed their commitment to extra voluntary oil supply cuts until the end of the year.

Brent crude futures rose $1, or 1.2%, to $85.89 a barrel by 12:13 p.m ET (17:13 GMT), while U.S. West Texas Intermediate crude was up $1.11, or 1.4%, at $81.62.

Saudi Arabia confirmed on Sunday it would continue with its additional voluntary cut of 1 million barrels per day (bpd) in December to keep output around 9 million bpd, a ministry of energy source said.