Forwards Rob Harley and Tyrone Holmes have both agreed new two-year deals with Glasgow Warriors.
The back-row pair have agreed extended two-year contracts, which will keep them at Scotstoun until at least May 2016.
Harley joined Glasgow in 2010 and has made 93 appearances for the RaboDirect Pro12 side while Holmes joined the club last summer on a one-year deal and has played 17 games.
Harley, who has five Scotland caps, said: "I've really developed as a player over the last four years, getting regular game time at the Warriors and playing for Scotland.
"I feel like this is the perfect place for me to continue my development, working with a great group of players and coaches."
Holmes, 28, said: "It was a great decision to come to Glasgow in the summer and I'm delighted to be staying for another two years."
Warriors head coach Gregor Townsend said: "It was really important for us to get Rob and Tyrone re-signed as the back-row is a very competitive area for most teams.
"Rob is a very consistent player and is extremely hard working. He is always prepared to put his body on the line in training and in games.
"Tyrone has been great for us since joining in the summer. He's really given us competition at openside and has pushed Chris Fusaro to playing at his best.
"As we approach the most important part of our season, it is a boost to have secured Rob and Tyrone for the next two seasons."
Meanwhile, the club have signed scrum-half Murray McConnell on a one-year contract from next season.
The 21-year-old development player has impressed for Ayr in the RBS Premiership this season.