It's the biggest one-day increase in oil prices in more than six years.
It jumped almost $4.00 to end the day at $42.56 U-S a barrel.
A look around Southern Ontario shows gas prices below the one dollar mark.
But Dan McTeague with Gas Buddy dot com says you might want to fill up fast, he expects prices to go up this weekend.
Even with yesterday's increase, the price of oil is down 10 per cent so far this month.