The Swedish brothers, 33, are in their final season of five-year, $30.5 million contracts and would have become unrestricted free agents at the end of the season had they not re-signed, NHL.com reported.
"We expected to be on different teams when we got drafted and now we're sitting here 14 years later on the same team and that's unheard of," Henrik said. "It says a lot about this organization. There have been a lot of times they could have maybe gone in a different direction, but they didn't and we are very fortunate to be here."
"We want to win, that's the bottom line," Daniel said. "You realize when you get older your chances are getting slimmer and slimmer. We want to have a good team around us and we have a chance to have a good team around us for a lot of years. That's really important to us, that's the one thing we are looking for, that Stanley Cup."