Ian Murray is the new St Mirren manager.
Murray will take over from interim manager Gary Teale, who failed to keep the Buddies in the Scottish Premiership.
The 34-year-old former Hibs and Rangers player took over at Dumbarton in November 2012 and has kept the part-time club in Scotland’s second tier.
Teale had hoped to retain his post after Saints won three of their last four matches.
Stewart Gilmour, St Mirren chairman, said: “Ian is a young ambitious manager who impressed the interview panel with his desire to go on to higher things in football.
“We are very grateful to Dumbarton FC for allowing St Mirren to speak to Ian.”
Murray, who will be swapping a part-time for a full-time squad, said: “The club has a fantastic infrastructure in place with its own training facility and successful youth academy and I hope to develop and enhance the position of the club.
“I would like to thank everyone connected with Dumbarton FC for giving me the chance in 2012 and hopefully they have seen progress over the past two and a half years.”
• Raith Rovers have appointed Ray McKinnon as their new manager. McKinnon leaves his managerial post at Brechin City to succeed Grant Murray at Stark’s Park.