The world could be facing a massive coffee shortage in the coming years if production doesn’t increase significantly. Because of increased consumption in emerging markets, global production must increase by 40 to 50 million bags within the next decade in order to meet demand, Bloomberg reports.

Already, experts expect a global shortage of 3.5 million bags in the coming coffee production season year, following a shortage of 6.4 million bags during the previous season. Droughts in Brazil and other parts of the world have made harvesting coffee beans more difficult. Climate change could threaten as much as a quarter of Brazil’s output, according to the International Center for Tropical Agriculture.