Argentina lock Mariano Sambucetti has agreed a new two-year deal with Bristol that keeps him at the club until 2009.
The 27-year-old joined Bristol from Brive for the 2005-6 season and has had to fight for a first-team place with Gareth Llewellyn and Roy Winters competing for the second-row berths.
Coach Richard Hill said: "We knew there was a lot of interest from other clubs and we wanted to hang onto him.
"I think it's a sign of where we're heading as a club that we've been able to keep him despite offers elsewhere."