Energy-related stocks gained Monday as oil inched higher. The S&P 500 Energy Sector Select ETF (XLE) rose more than 1%, leading the overall market gains.

Crude futures rose on renewed geopolitical tensions and after Saudi Aramco increased its prices for Asian customers, signaling tight supply.

West Texas Intermediate (CL=F) rose less than 1% to hover above $78 per barrel. Brent, the international benchmark price, also gained (BZ=F) to trade above $83 per barrel.

Last week, oil fell more than 6% amid diplomatic efforts for a ceasefire between Hamas and Israel. By Monday, that prospect had dimmed.

“I believe we have seen some major liquidation in the crude space from hedge funds and therefore, more buying power could be on the sidelines if we get renewed Geopolitical fears,” Dennis Kissler, senior vice president at BOK Financial, said in a note to clients on Monday.