LONDON (Reuters) - Manchester City defender Martin Demichelis has signed a one-year contract extension with the English champions that will keep him at the club until the end of next season.

The Argentina international, 34, has overcome a shaky start to his career in England and has been a regular for most of this season, making 30 appearances in all competitions and scoring once against Arsenal in the Premier League in September.

"I want to say that I am really proud and happy to have extended my contract for another year," he told the club's website.

"Manchester City is a club with a lot of ambition. We want to grow every year," he said.

Demichelis joined City in September 2013 from Atletico Madrid and helped the team win the Premier League title and the League Cup last season.

They are currently second in the Premier League, five points behind Chelsea and with 10 matches to play.