The Boston Bruins have locked up at least one important part of their future.

The Bruins have signed head coach Bruce Cassidy to a multi-year contract extension, the team announced Wednesday morning.

The length and terms of the contract weren't disclosed, but Cassidy's extension had been a long time coming, as team president Cam Neely told our Joe Haggerty in August the sides had already begun contract negotiations.

Pierre LeBrun of TSN and The Athletic reports that the deal will pay Cassidy about $3 million a year.

Cassidy is entering his third full season as Bruins head coach since taking over for Claude Julien midway through the 2016-17 campaign. He's enjoyed a very successful tenure, leading Boston to 112 points in 2017-18 and taking the B's to Game 7 of the Stanley Cup Final last season.

The 54-year-old currently owns the fourth-best winning percentage in team history at .670 after going 117-52-22 to date.

The Bruins' open their preseason next Monday at the New Jersey Devils.

Click here to download the new MyTeams App by NBC Sports! Receive comprehensive coverage of your teams and stream the Celtics easily on your device.