In the week ended July 10, the forex kitty increased mainly due to a jump in foreign currency assets (FCA), which is a major component of the overall reserves.
FCA was up by $2.372 billion to $475.635 billion in the reporting week, the Reserve Bank data showed.
Expressed in dollar terms, the foreign currency assets include the effect of appreciation or depreciation of non-US units like the euro, pound and yen held in the forex reserves.
Gold reserves were up by $712 million to $34.729 billion, as per the central bank data.
The special drawing rights with the International Monetary Fund (IMF) rose $5 million to $1.453 billion.
The country's reserve position with the IMF also increased by $19 million to $4.545 billion during the reporting week.