Beyond Meat is revamping its signature plant-based burger, hoping that healthier ingredients will help it boost flagging US sales.

The El Segundo, California-based company said its new Beyond Burger patties and Beyond Beef grounds cut saturated fat by 60% by switching from canola and coconut oils to avocado oil. The new beef products also have less sodium and more protein.

Beyond Meat has updated its products before; this is the fourth generation of the Beyond Burger. But they say this is the biggest leap forward the brand has made since the Beyond Burger went on sale in 2016.

The company spent years developing the new recipe with input from nutritionists and doctors, trying to provide the benefits of plant-based eating in a burger that mimics the taste and texture of animal meat.

“Health is one of the top drivers to the plant-based meat category, and we feel a deep responsibility to deliver on that expectation for the consumer,” said a company spokesperson.

The new Beyond Burger significantly improves that health profile. It has 2 grams of saturated fat, or 10% of the recommended daily intake, and 14% of the recommended intake of sodium. A single patty has 230 calories, which is the same as the outgoing burger.