Original dragon Kevin O'Leary and internet mogul Bruce Croxon are leaving CBC's hit reality series Dragons' Den.

The two Canadian businessmen will be replaced by two new investors who will be named on Friday.

The series, which earned a Canadian Screen Awa​rd for best TV reality series earlier this month, features entrepreneurs pitching business proposals and ideas to a panel of venture capitalists, who must then decide whether or not to invest in the projects.

The line-up of investors has morphed since the show, hosted by CBC broadcaster Dianne Buckner, launched in 2006.

Earlier dragons Robert Herjavec, W. Brett Wilson, and Jennifer Wood moved on after past seasons. Laurence Lewin died in November 2008.

The most recent addition was personal finance guru David Chilton (author of The Wealthy Barber), who joined the team in 2012.

Rounding out the current investor lineup are marketing maven Arlene Dickinson and franchise king Jim Treliving.

Dragons' Den is currently in its eighth season on CBC-TV.

O'Leary will continue his role on CBC's The Lang & O'Leary Exchange, according to CBC-TV.