American former 100m and 200m world champion Tyson Gay will return from a one-year ban at the Diamond League meeting in Switzerland in July.
Gay was suspended in May after testing positive for a banned anabolic steroid.
His suspension was backdated to June 2013, the date he tested positive at the US World Championship trials, allowing his return in Lausanne.
Gay said: "Lausanne has always been one of my favourite meets and I'm thrilled to have it be my opening meet."
The 31-year-old will race in the 100m against American rival Justin Gatlin, who was given a four-year ban after failing a doping test in 2006.
Gay, who won gold in the 100m, 200m and 4x100m at the 2007 World Championships, was forced to return the silver medal he won in the 4x100m relay at the London Olympics in 2012.