Glasgow Warriors have secured the services of Scotland tighthead prop Zander Fagerson on a new three-year contract until at least May 2019.
Fagerson made his Glasgow debut from the bench against Treviso last season and since then has gone on to play 29 times for the club.
He started Friday's 43-14 bonus-point win against Zebre in Parma, which moved the Warriors up to third in the Guinness PRO12 standings.
The 20-year-old won his first cap for Scotland as a replacement in the 2016 Six Nations against England at Murrayfield in February and in doing so became the youngest prop to play for Scotland in half a century.
After coming through the BT Sport Scottish Rugby Academy system, the tighthead signed his first professional contract with the Warriors in March 2015, which was due to run until May 2017.
"I chose to sign for three years with Glasgow Warriors because I love the club and I feel we're going places," he told glasgowwarriors.org.
"The club and Gregor (Townsend) have showed a lot of faith in me and I want to repay them for that.
"Glasgow Warriors is a club that strives to get better every day. Winning the Guinness PRO12 last season was a massive achievement and we’re working hard to try and retain our title this year.
"I feel my game is coming along nicely and although I am nowhere near the finished article I'm continually growing and developing as a player.
"Working with Dan (McFarland) and being involved with Scotland has helped my scrummaging and the technical aspects of the game.
"I'm getting better with each game I play and I can’t wait for the next three years."
Glasgow Warriors head coach Gregor Townsend said: "It’s fantastic news for the club that Zander will be staying in Glasgow for at least another three years.
"He has worked really hard since making his debut for the club 18 months ago and getting capped for Scotland this year was another big milestone for him.
"It’s important that we continue to retain the players who we feel can help the club improve and we look forward to Zander having a big role to play in the future."