Gymnastics superstar Simone Biles has apologized to former collegiate swimmer Riley Gaines following a heated online exchange.

Biles’ post come days after she and political activist Riley Gaines sparred on social media over transgender athletes.

Riley Gaines took a dig at Olympic gymnast Simone Biles when announcing her pregnancy at the Young Women’s Leadership Summit. While unveiling her baby bump to the crowd, the former swimmer referred to her and Biles’ public spat over trans athletes in sports and said: “I think the funniest thing about this to me [is] her saying,