Belarus has fully paid off its overdue debt of $726.2 million (£568m) for gas supplied by Gazprom.
The payment is for gas provided by the Russian energy giant in 2016/17.
According to Gazprom, it supplied 18.6 billion cubic meters of gas to Belarus in 2016 and 5.6 billion cubic meters of gas from January through to March 2017.
The news comes after the heads of the two nations reportedly met earlier this month and settled an energy dispute that had tainted their relations.
A meeting was also held between Alexey Miller, Chairman of the Gazprom Management Committee and Vladimir Semashko, Deputy Prime Minister of the Republic of Belarus.
They discussed ongoing and future co-operation in the gas sector, with a particular focus on issues related to Russian gas supplies to the Eastern European nation.