PepsiCo may soon close a deal to acquire Poppi, a maker of increasingly popular low-sugar prebiotic soda, for more than $1.5 billion, sources told Bloomberg.

The company’s stock was virtually flat on the news. The company, which sells a ton of junk food brands like Lay’s Chips and Mountain Dew, has been moving toward adding healthy-ish options to its portfolio. In January, the food giant completed its acquisition of Siete Foods, which sells tortilla chips dotted with vegan, paleo, and grain-free labels.