8.9.1 upgrade fails on CentOS

Upgrade attempt from 8.9.0 to 8.9.1 CE edition.

commands;

sudo gitlab-ctl stop

sudo yum install gitlab-ce

gitlab preinstall:

error: %pre(gitlab-ce-8.9.1-ce.1.el7.x86_64) scriptlet failed, exit status 1

Error in PREIN scriptlet in rpm package gitlab-ce-8.9.1-ce.1.el7.x86_64

Verifying : gitlab-ce-8.9.1-ce.1.el7.x86_64 1/2

gitlab-ce-8.9.0-ce.0.el7.x86_64 was supposed to be removed but is not!

Verifying : gitlab-ce-8.9.0-ce.0.el7.x86_64 2/2

Failed:

gitlab-ce.x86_64 0:8.9.0-ce.0.el7 gitlab-ce.x86_64 0:8.9.1-ce.1.el7

This is a very basic setup of GitLab (I only installed it last week for testing.) Nothing tricky, just followed instructions on initial setup. Aside from a couple of users added and email server configured, nothing else has been done to the 8.9.0 instance.