St Mirren manager Stephen Robinson and assistant Diarmuid O'Carroll have agreed new deals until the summer of 2026.
The duo led the Paisley side to their most successful top-flight campaign since 1985 last season, after securing a top-half finish, as well as their highest points tally of 46.
St Mirren finished sixth and also won nine top-flight home matches for the first time since 1987.
Robinson, who took over in February 2022, said: "I'm delighted and very grateful to the board and the fans for their support. Now it's time to keep building and keep taking the football club forward.
"The contract was always going to get signed, there was a trust basis that we just wanted to finish the season and make sure we concentrated fully on that. I enjoy what we're doing and enjoy the challenge of trying to defy the odds next season and get into that top six.
O'Carroll added: "I'm absolutely delighted to extend my deal at St Mirren. It was a very straightforward process once the contract was offered. I'm extremely excited at the direction the club is going both on and off the pitch.
"I've loved my time at the club since joining last February and I'm confident myself, the manager and the staff can continue to drive standards and hopefully maintain our progression on the pitch."
Chairman John Needham said: "We are thrilled that Stephen and Diarmuid have extended their contracts until 2026.
"I have been hugely impressed by their collective professionalism and ambition since they joined the club last year.
"Both played such a huge role in achieving our aims of a top-six finish last season and have been committed to helping grow the club in a sustainable way. I am excited to be entering the new season as we look to build upon the relative success we've had during their tenure so far."
