Starbucks is updating its employee dress code for a more streamlined look.

The coffee chain plans to enhance the look of the iconic green aprons. Starting May 12, Starbucks baristas will be required to wear a solid black top and any shade of khaki, black, or blue denim bottoms. The coffee chain will also provide baristas with a new line of company-branded t-shirts.

“By updating our dress code, we can deliver a more consistent coffeehouse experience that will also bring simpler and clearer guidance to our partners, which means they can focus on what matters most, crafting great beverages and fostering connections with customers, ” the coffee chain said in a press release.

The new dress code is one of several changes Starbucks is implementing this year. In January, the coffee chain announced a number of new policies, including a new code of conduct. Starbucks also started offering free refills this year.