Saracens captain Steve Borthwick has agreed a new contract with the Aviva Premiership champions.
Former England skipper Borthwick, 31, led Sarries to their maiden Premiership success when they beat Leicester in May's Twickenham final.
Saracens have not revealed the length of the new deal for the former Bath lock, but it follows hot on the heels of director of rugby Mark McCall and his entire coaching team committing themselves to the club until 2014.
"People talk about Saracens as a special club, and they are right in many ways," said Borthwick.
"There is a fantastic group of people at Saracens who work incredibly hard for each other to continue to build this great club.
"We have a long way to go in many respects, and I'm looking forward to the journey."
Saracens also confirmed new deals for flanker Kelly Brown and scrum-half Neil de Kock.
Scotland international Brown, 29, joined from Glasgow in 2010 while De Kock has spent the last five years at the club. The South African said: "I am preparing to start my sixth season at the club, and I can honestly say I've never been happier.
"Last season was fantastic, but everybody understands we will have to work twice as hard to retain the Aviva Premiership title, everybody is completely committed and everybody is moving in the same direction."
Sarries also revealed the signing of 19-year-old scrum-half Ben Spencer from Cambridge after the youngster impressed during pre-season.