St Mirren have tied up Mark Corcoran and Simon Lappin on new two-year deals ahead of their return to the SPL.
Simon Lappin played a key role in St Mirren's First Division triumph
Both players were important figures in the club's promotion-winning campaign.
Manager Gus MacPherson admitted he was pleased to keep the pair at the club, but expressed concern that David van Zanten had yet to sign a new deal.
"I'm absolutely delighted to keep these two boys at the club, especially as left-sided players are few and far between," he told the club website.
"I think Simon has shown in the last two years that he has been very consistent and his overall level of performance has been superb. You can play him out wide in a four or five man midfield, or just as easily play him one in.
"I feel his football development has come on quicker than we probably thought it would.
"Looking at Mark Corcoran, he came here from part-time football and while it maybe took him a wee bit of time to adjust to what we were looking for, I don't think anyone could complain about his contribution to the team in the season just ended.
"Mark is a very exciting talent that we knew had the the right capabilities that we were looking for, we just needed him to bring them through on a more regular basis and since the turn of the year, most notably the Scottish Cup game against Motherwell, his performances have been fantastic.
"Hopefully with a year's full-time football experience under his belt we can see more from Mark Corcoran in the seasons ahead."
MacPherson is less optimistic about Van Zanten's future at the club.
"All I can really say is that David van Zanten hasn't signed as yet and his contract expires tomorrow (Tuesday)," he added.
"If you're asking my thoughts, I would say that it doesn't look good that David van Zanten will be a St Mirren player next season. If his advisors feel they can get him a better offer, financially or for the development of his career, then that's his choice.
"But if it comes to that he will leave here with our best wishes and we will always remember his contribution in what was achieved here at the club."