diff --git a/CHANGELOG.md b/CHANGELOG.md
index e3e520dc..4727133f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,9 @@
 - filtermail: respect config message size limit
   ([#572](https://github.com/chatmail/relay/pull/572))
 
+- Don't deploy if one of the ports used for chatmail relay services is occupied by an unexpected process
+  ([#568](https://github.com/chatmail/relay/pull/568))
+
 - Add config value after how many days large files are deleted
   ([#555](https://github.com/chatmail/relay/pull/555))