Greek lawmakers approved the country’s 2013 austerity budget early Monday, an essential step in Greece’s efforts to persuade its international creditors to unblock a vital rescue loan installment without which the country will go bankrupt.

The budget passed by a 167-128 vote in the 300-member Parliament. It came days after a separate bill of deep spending cuts and tax hikes for the next two years squeaked through with a narrow majority following severe disagreements among the three parties in the governing coalition.