The NHL club announced Wednesday that 37-year-old Bouillon has signed a one-year contract extension.
The Montreal native returned to the Canadiens as an unrestricted free agent last summer on a one-year deal worth US$1.5 million. Reports said he will make the same amount in 2013-14.
Bouillon surprised many with his solid play this season. The five-foot-eight, 200-pound rearguard — who plays above his weight — has a goal and six assists in 29 games and is plus-6 for the season.
He played his first nine NHL seasons wit the Canadiens before inking a free agent deal with the Nashville Predators in 2009.
In 705 career games, he has 30 goals and 111 assists, with 489 penalty minutes.
It was Montreal's second player signing in a week. Last Friday, centre David Desharnais inked a four-year $14 million contract.