# Pastebin 00tjSkvr
service zuul stop
service zuul-merger stop
ps auxw | grep zuul # make sure they're dead, if not kill, then kill -9

git clone https://github.com/openstack-infra/zuul.git
cd zuul
git reset --hard 9ba7c060e6ffd335894d1b0ab70ae24656f7a3c5

pip uninstall apscheduler
pip uninstall zuul
pip install .

service zuul-merger start
service zuul start