Zander de Bruyn has inked a new contract to remain with Somerset in 2009.
The South African batsman, 33, is averaging just under 50 in the LV County Championship after joining the county at the start of the season.
Meanwhile, veteran all-rounder Keith Parsons has called time on his first-class career.
Parsons scored more than 5,000 runs and claimed 100 wickets in both four-day and one-day cricket for Somerset during 17 seasons, the highlight was being named man-of-the-match in the 2001 C&G Trophy final victory.
The 35-year-old has not featured in the first-team during 2008 and has taken the decision to retire in order to concentrate on his business interests.
"There comes a time when your body tells you it's time to pack in professional sport," Parsons told Somerset's official website.
"I worked as hard as I have ever done on my fitness last winter, but little niggles keep occurring."