diff --git a/CHANGELOG b/CHANGELOG
index 96638b7e0..41929396c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 Version 2022.05 (unreleased)
   Friendica Core
+    Breaking: The distribution of _private forums_ was moved to ActivityPub, making them incompatible with older versions of Friendica [annando]
 
   Friendica Addons