We are planning to perform a point upgrade (minor upgrade) of Moodle.
This work will be carried out on 2018-3-21, between 09:00 and 11:00. It will include the latest security updates, performance improvements and other bug fixes from moodle.org.
The upgrade is a simple process and we are confident there is a very low risk of unexpected issues, however a short downtime - normally about 2 minutes, but could be up to 10 minutes - may be required