diff --git a/CHANGELOG.md b/CHANGELOG.md
index a6d4e3381ad..fef715a4aad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -79,6 +79,7 @@
 ### Mimir Continuous Test
 
 * [CHANGE] `mimir-continuous-test` has been deprecated and replaced by a Mimir module that can be run as a target from the `mimir` binary using `mimir -target=continuous-test`. #7753
+* [CHANGE] `-server.metrics-port` flag is no longer available for use in the module run of mimir-continuous-test, including the grafana/mimir-continuous-test Docker image which uses the new module. Configuring this port is still possible in the binary, which is deprecated. #7747
 * [BUGFIX] Set `User-Agent` header for all requests sent from the testing client. #7607
 
 ### Query-tee