diff --git a/index.md b/index.md
index c50a27d..02f2c4f 100644
--- a/index.md
+++ b/index.md
@@ -5,7 +5,7 @@ they are worked on. You can also get real-time updates of service outages
 on our [Slack channel](https://join.slack.com/t/foundriesio/shared_invite/enQtNTc5NDkxNTI5NTExLWQ1Yjc3NDA2MjI3NzA3YzkxYjEzNzlhZjQ0M2QxYTIzYmIzZjlmOThmZGU0NTk5MWEwZGIwMTU2YWE4N2I5NWQ).
 
 ### Upcoming Events:
-   No events
+ * [2021-01-13 OTA maintenance](maintenance/2021-01-13-ota)
 
 ### Past Events:
  * [2020-10-21 Deployments update](maintenance/2020-10-21-deployments-update)
diff --git a/maintenance/2021-01-13-ota.md b/maintenance/2021-01-13-ota.md
new file mode 100644
index 0000000..2109e86
--- /dev/null
+++ b/maintenance/2021-01-13-ota.md
@@ -0,0 +1,4 @@
+## OTA maintenance
+
+On Wed, 2021-01-13, between 15:00 and 17:00 UTC some of [OTA/TUF](https://docs.foundries.io/latest/reference-manual/ota/ota.html#over-the-air-updates) components will be updated. During the update, device registration and operations with treehub componetns might fail. Expected downtime - less than 40 minutes.
+