Changes are coming to the McFlurry.

Starting Sept. 10, McDonald’s will introduce the Mini McFlurry – a smaller serving of the fan-favorite ice cream treat – to participating restaurants across the nation. Another change: The fast food chain will no longer serve the frozen treat in a cup with a dome-shaped plastic lid.

Instead, the ice cream treat– both the original and mini version– will come in a cardboard cup with four flaps to cover the top.

The new design is the latest effort from McDonald’s to make sustainable changes.

In a press release, the chain says the new packaging will ” help reduce waste and advance our goal of sourcing 100% of primary guest packaging from renewable, recycled or certified materials by the end of 2025.” “Packaging updates like this matter,” said Michael Gonda, the SVP, Chief Impact Officer of North America for McDonald’s, in a press release. “Not only is this a fun new way for our U.S. fans to enjoy the McFlurry; we’re also moving one step closer to fulfilling our packaging and waste commitments.”

The four-flap cups are currently available in several other international markets like Canada and Indonesia.