Quinn Roux has signed a contract extension that will keep him at Connacht until 2021.
The 27-year-old South African-born lock has made 85 appearances for the province and has earned six caps for Ireland since arriving in the Sportsground.
Hepreviously played with the Stormers, Western Province and Leinster, heading west initially on a loan deal in 2014 before signing a full-time deal a year later.
He was at the heart of Connacht’s memorable Pro12 win two years ago and made his Ireland debut on the tour to South Africa in the same year.
"Quinn has been a massive player for Connacht," said head coach Andy Friend.
"He is the ultimate professional and is unrelenting in his preparation and his attention to detail. As one of the established players in the squad he is leading by example both on and off the field.
"His signing is another huge boost for us and I have no doubt that Quinn will be a key player for us in the seasons ahead."
Roux added: "I've enjoyed my time in the Sportsground and believe that we are capable of bringing further success to the province in the seasons ahead. My time here has also led to my international debut which I am hugely proud of.
"I'm looking forward to the next two seasons with Connacht and hope to continue to establish myself as a part of the Irish squad."