diff --git a/CHANGELOG.md b/CHANGELOG.md
index b36013f2c..478ef4e6b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -75,6 +75,7 @@ SPDX-License-Identifier: CC-BY-SA-4.0
 - Note information dialog containing word count, revision count, last editor and creation time.
 - Image tags with placeholder urls (`https://`) will be replaced with a placeholder frame.
 - Images that are currently uploading will be rendered as "uploading".
+- Code blocks with `plantuml` as language are rendered as [PlantUML](https://plantuml.com/) diagram using a configured render server.
 
 ### Changed