Diet Pepsi can’t quit aspartame just yet.
The soft drinks company is returning to its old taste with a new Diet Pepsi Classic Sweetener Blend, Fortune reports. The flavor, to be released in September, will include the artificial sweetener aspartame—which was dropped from soda’s recipe in 2015 after being criticized for its potential health risks.
The company will also release two versions of the diet beverage that allow consumers to opt in or out of aspartame: Diet Pepsi which is sweetened with sucralose and Ace-K, and Pepsi Zero Sugar (the new name for Pepsi Max, meant to highlight its zero calories).
Pepsi drinkers’ distaste for the altered flavor (and the overall drop in soda consumption) led to a sales decrease, according to Fortune. American retail sales of Diet Pepsi fell 10.6% in the first quarter of 2016, reports the The Wall Street Journal.
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“Consumers want choice in diet colas,” said a Pepsi representative in a statement. “So we’re refreshing our U.S. lineup to provide three options that meet differing needs and taste preferences.”