diff --git a/images/docker-fleet.md b/images/docker-fleet.md
index 49229bae8c..670525771d 100644
--- a/images/docker-fleet.md
+++ b/images/docker-fleet.md
@@ -166,6 +166,7 @@ We publish various [Docker Mods](https://github.com/linuxserver/docker-mods) to
 
 ## Versions
 
+* **13.12.21:** - Add mitigations for CVE-2021-44228
 * **26.04.20:** - Updated to keep in line with v2.0.0 branch of Fleet
 * **19.12.19:** - Rebasing to alpine 3.11.
 * **02.07.19:** - Rebasing to alpine 3.10.