Terms of the deal weren't announced but CBSSports.com reported Jansen, 23, will earn $4.3 million in 2014.
The right-handed fireballer is coming off a breakout season for the National League West champions, notching a career-best 28 saves with a 1.88 ERA over 75 appearances in 2013.
Jansen logged 111 strikeouts over 76 2/3 innings.
The reliever has compiled a 12-7 record with a 2.10 ERA and 62 saves over 216 career games with the Dodgers.
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