Oil prices ticked up in early trading on Wednesday after ending the previous session up more than 4% on worries that the Iran-Israel conflict could disrupt supplies.

Asian shares were mixed and oil prices advanced Wednesday after the escalation of conflict in the Middle East hit Wall Street. U.S. benchmark crude oil was up 24 cents at $73.51 per barrel. Crude prices rose more than 4% on Tuesday after U.

U.S. oil prices already jumped last week, which could cause prices at the pump to rise about 20 cents a gallon in the coming weeks, according to one estimate.