The St Mirren board have dispensed with the services of a manager who led Saints to League Cup victory last season.
A statement read: "The board of directors have today decided not to offer Danny Lennon an extension to his contract that expires in June 2014."
Lennon led Saints to an eighth-placed finish in the Scottish Premiership this season, equalling the feat he achieved two years earlier, which was the club's highest placing since 1989.
But he appears to have paid the price for some poor runs since the Hampden win over Hearts, despite guiding the Buddies to safety for the fourth successive season.
The board statement continued: "Danny and his players gave our club one of its finest days on 17 March 2013 and they will always be remembered by the club for that wonderful day.
"Decisions like this are never easy. However, we would in particular commend Danny for his professionalism and the dignified way he has carried out his duties during a very challenging season.
"The board would like to thank Danny for his service to the club over the last four years and wish him every success in the future."