Hyypia has an option of a two-year deal as a coach at the club included in the new deal.
“We’re glad that we’ve been able to hold on to such a popular and successful player as Sami,” declared Bayer 04 managing Wolfgang Holzhauser on the official Leverkusen website.
The 36-year-old Finn joined Leverkusen from Liverpool in the summer of 2009.