When creating a Jessie instance in wmflabs, it comes with puppet 3.7.2 however we are preferring 3.8.5 now. Once the instance is available, one has to manually upgrade puppet.
$ apt-cache policy puppet puppet: Installed: 3.7.2-4 Candidate: 3.8.5-2~bpo8+2 Version table: 4.8.2-5~bpo8+1 0 100 http://mirrors.wikimedia.org/debian/ jessie-backports/main amd64 Packages 3.8.5-2~bpo8+2 0 1001 http://apt.wikimedia.org/wikimedia/ jessie-wikimedia/backports amd64 Packages 3.7.2-4+deb8u1 0 500 http://security.debian.org/ jessie/updates/main amd64 Packages *** 3.7.2-4 0 500 http://httpredir.debian.org/debian/ jessie/main amd64 Packages 100 /var/lib/dpkg/status
I guess the Jessie base image could use a refresh.