Brent July futures rose 1% to $111.50 per barrel, while WTI June futures gained 0.5% to $105.57 per barrel.
Prices surged amid heightened U.S.-Iran tensions, with President Trump signaling a continued naval blockade and possible military actions.
Iran vowed to keep the Strait of Hormuz closed, a chokepoint supplying about 20% of global oil, limiting flows.
Brent’s June contract had expired after hitting a four‑year high above $126 per barrel in early April.