Greek Prime Minister Alexis Tsipras (R) and Economy Minister George Stathakis at the parliamentary session in Athens today

Greek Prime Minister Alexis Tsipras confronted a widening rebellion within his leftist Syriza party as parliament voted to approve the country’s third financial rescue by foreign creditors in five years.

The vote was held after daybreak on Friday after lawmakers bickered through the night over procedural matters. Euro zone finance ministers are expected to approve the vital aid for Athens later on Friday.

Thanks to support from pro-euro opposition parties, the 85 billion euro ($95 billion) bailout program easily passed with 222 votes in the 300-seat chamber.

But 43 lawmakers – or nearly a third of deputies from Tsipras’s Syriza party – voted against or abstained, well above the three dozen that defied him in a vote on reforms last month.

Tsipras will call a confidence vote in parliament after Greece makes a debt payment to the ECB on Aug.20, a government official said. A senior lawmaker, Makis Voridis from the opposition New Democracy party immediately said his party would not vote in favor of the government, raising the odds that the government could be toppled.

In an appeal to lawmakers before the vote, Tsipras defended the decision to accept a program that comes at the price of tax hikes, spending cuts and economic reforms, saying it was a choice between “staying alive or suicide”.

“I do not regret my decision to compromise,” Tsipras told lawmakers. “We are not exulting but we are also not mourning over this difficult agreement. I have my conscience clear that it is the best we could achieve under the current balance of power in Europe, under conditions of economic and financial asphyxiation imposed upon us.”