Saudi Arabia, the world’s biggest oil exporter, raised June prices for all of its crude grades to Asia, the state energy giant said on May 2, as the supply and demand picture tightens.

Saudi Aramco raised the official selling prices for its Arab Light crude grade to customers in Asia—its biggest buyer—to a $1.90 a barrel premium compared with the Oman/Dubai contract.

This was a 70-cent uptick compared with the prior month, with the kingdom raising prices for other grades by an even higher level. Oil analysts said this was a reflection of a more bullish market.