KCBS_740 SAN FRANCISCO (KCBS) — PepsiCo is putting aspartame back in some of its diet beverages less than a year after pulling the artificial sweetener as part of a marketing move over safety concerns.

The sweetener had been linked to cancer in lab mice.

Pepsi MAX will be re-introduced to U.S. consumers this fall as Pepsi Zero Sugar and will contain aspartame. Diet Pepsi Classic Sweetener Blend will also contain aspartame in its formula.

But, Diet Pepsi will continue to be sweetened without aspartame.