The 33-year-old centre-half had one year left on his existing deal at the Proact Stadium, but boss Dean Saunders has rewarded him with a new 12 month deal .
Evatt told Spireites Player: “I’m delighted to stay. There were a few rumours about clubs being interested in me, but I feel that I’m one of Chesterfield’s own.
“I love the area and I’m settled here so hopefully I can finish my career here. It’s a club that is very close to my heart and hopefully we can have some more success in the future.
“The manager is such an enthusiastic character and his enthusiasm rubs off on everyone else. We’re not a million miles away, as the gaffer knows, so that’s why I wanted to stay.”
Saunders added: “It’s great news for everyone that Ian has agreed an extended deal. He’s an experienced player who has a key role to play for the club. I will use him to help bring the young players on because you learn from experienced pros.”