Ukraine and Belarus today signed a two-year deal on oil transit through Ukraine's Odessa-Brody pipeline, Ukraine's Energy Ministry said.
Under the deal, Ukraine will ship 4 million tonnes of light crude a year to the Mozyr refinery in Belarus, Reuters quoted the Ministry as saying in a statement.
The Ministry did not say where the oil would come from.
Belarus stopped receiving Russian oil 1 January as Moscow and Minsk have yet to agree on the price.
Rows over prices and transit tariffs between Moscow and its neighbours, Belarus and Ukraine, have led to Russian oil and gas supply stoppages to Europe in the past.
Russian oil transit across Belarus via the Druzhba pipeline to European customers in Germany and Poland has not been affected, and Moscow has said it has looked into using other routes to ensure supplies continue.