Bloomberg reported that Libya’s biggest oilfield is gradually resuming production after a five-month shutdown as regional powers push to end the country’s civil war.

The restart of the Sharara field in the southwest comes after “lengthy negotiations” with militants to reopen a valve closed in January, the state-run National Oil Corporation said Sunday.

Production will resume at an initial 30,000 barrels per day and take three months to return to full capacity due to damage caused by the shutdown, it said in a statement.

Sharara was producing around 300,000 barrels before the cutoff amid an offensive by Khalifa Haftar, who leads a rebel military force based in the country’s east.