The last of the late-night television old guard is ready to say goodbye.

David Letterman told the audience during Thursday's taping of "The Late Show with David Letterman" that he will retire in 2015. Letterman has hosted the show on CBS since 1992, when he departed NBC after 11 years hosting "Late Night." That move came after NBC chose not to give him "The Tonight Show" chair once occupied by Johnny Carson.

Musician Mike Mills, who appeared on Letterman's show Thursday, broke the news on Twitter.

Letterman's departure follows this year's late-night host shuffle that saw Jay Leno leave "The Tonight Show" and Jimmy Fallon take his place. The retirement news is hardly a surprise; industry experts predicted as much last year when Letterman signed a two-year contract extension.