The show – now in its eighth series – is a regular ratings puller for BBC One and stars Dennis Waterman, Alun Armstrong, James Bolam and Amanda Redman.
The current run’s opening episode achieved the show’s largest audience for the past three years with 8.3 million viewers tuning in to see the team opening the files on the death of a senior palaeontologist at the Natural History Museum.
The new episodes will air in 2012 and 2013.
Executive Producer Richard Burrell said: “The show’s ability to be warm and humorous and tackle darker issues simultaneously makes it distinctive from other crime dramas.
“The audience’s response to the current series of New Tricks has been phenomenal and I’m delighted we are able to repay their loyalty with another two brand new 10-part series.”