Jack  Stockwell has become the latest Dragon to commit his long-term future to the club, signing a contract extension which will keep him at the club until the end of 2017.

Hot on the heels of young back-rower Tyson Frizell committing to the Red V for another four years, St George Illawarra continued their aggressive retention policy by locking up Stockwell.

The 21-year-old became a permanent fixture in coach Steve Price's top-grade squad last season after making his debut in 2012.

"The decision was a fairly simple one to make in the end, having progressed through the club's various youth teams, and I look forward to being a part of the club's future," Stockwell said.

The Picton junior has already played 23 NRL games to date and is being touted for higher representative honours.

Price, who will unleash a young pack in 2014, said he was delighted with Stockwell's decision to remain with the joint venture before rival clubs circled.

"Jack is an exciting young player who works extremely hard and continues to improve with each training session and game," Price said.

"Jack is very highly regarded by his teammates and shows maturity beyond his years."