Originally published at: https://www.whonix.org/blog/tor-0-2-9-10-1d80-jessie1
Updated Tor was uploaded to Whonix stable-proposed-updates as well as to testers repository.
Instructions for changing Whonix repository:
https://www.whonix.org/wiki/Whonix-APT-Repository
Then just do a update:
https://www.whonix.org/wiki/Update