The new deal will keep the 26-year-old at Parkhead until the summer of 2013.
“I am absolutely delighted to commit my future to Celtic,” he told the club’s official website.
“As a Celtic supporter, everyone knows the feeling I have for the club.
“It was an absolute dream come true to sign for the club in the first place.
“This is where I want to play my football and I now look forward to the challenges ahead and fighting for my place in the team.”
