St George Illawarra are banking on Cameron McInnes forming a premiership-winning partnership with halves Ben Hunt and Gareth Widdop after the hooker signed a new three-year.
McInnes, who was heading into the last year of his existing deal, has committed to the Dragons until the end of 2021.
It comes after the Dragons had already signed Ben Hunt until at least 2022 and captain Gareth Widdop is contracted until 2021.
"I've only been here for 12 months but it's been the best year of my footy life,” McInnes said in a statement.
“It was a no-brainer for me and I wanted to stay for as long as I could. It's going to be good moving forward knowing that I have that stability.
"This is just the beginning. I really want to work harder towards bigger and better things. For us I think the top four is in reach for us so I just need to keep playing the best footy I can."
Dragons’ director of rugby league Pathways Ian Millward said McInnes is a key part of their plans.
"Cameron had an outstanding season in 2017,” he said.
“ A lot of people don't see what he does away from the playing field. He's one of our best trainers and a future leader of our club
"2017 was his first full season in the top grade, playing 80 minutes every week too, and he's acknowledged there are areas of his game that he wants to continue to improve.
"With Cameron at hooker, and Ben Hunt and Gareth Widdop in the halves, we're in a position now where we are very settled with world class players."