diff --git a/templates/front/about.html b/templates/front/about.html
index 0af37671..a118ba3f 100644
--- a/templates/front/about.html
+++ b/templates/front/about.html
@@ -34,7 +34,8 @@
         <p>
             While we can only guarantee a <em>best effort</em> availability,
             in practice the availability has exceeded 99.9% since the service
-            publicly launched in July 2015.
+            publicly launched in July 2015. That is, until 20 August 2016,
+            when the service <a href="https://medium.com/@healthchecks/outage-postmortem-20-august-2016-204297b9d3dd#.dahxkssp8">experienced a 24 hour outage</a>.
         </p>