18th October 2017, 18:38 | catalans
The 32-year-old back-row forward joined the Dragons from Warrington Wolves in 2012 and this season became the third overseas player in the club's 11-year history to register 100 Betfred Super League appearances.
"I'm very happy to stay at the Dragons for one more year," Anderson said. "I know something exciting is about to happen. This place is special to me and I'm ready to work hard for next season."
The Catalans have also given a new two-year deal to 20-year-old prop Lambert Belmas, who is currently in Australia with France's World Cup squad.
Dragons head coach Steve McNamara said: "I am delighted with the re-signing of both Louis and Lambert.
"Louis has been tremendous for the club and, even at the later stage of his career, is in outstanding physical shape and has a willingness to continue improving his game. His experience and leadership will be vital for us moving forward into 2018.
"Lambert is a young man with huge potential. His development is something I am really looking forward to playing a part in."