The fresh packaging, created by Springetts, carries a new typeface and a pink, red and purple swirl design. It will be rolled out this month to coincide with the back-to-school period.
Yop is available in straw-berry and raspberry variants, and is sold in 750g family bottles and 330g convenience formats. Last year Yoplait added a 180g four-pack format, Yop Minis, to the range, to tap into the lunchbox market.
Sales of the brand grew by 5% to £11m last year, according to Mintel.