The biggest former Yugoslav republic is following Hungary and Poland, where officials boosted gold reserves in 2018 to create a bulwark against crisis.
The updates will incorporate the results of drilling completed in 2017 and 2019, updated metallurgical test work on the upper part of the sulphide unit and a new geologic model.
The more than 2 million directly employed in small-scale mining in Mali, Burkina Faso and Niger have become a source of financing and recruits for Islamist militants in the region.