diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0318ab..6f4d6c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- Bidirectional sync smoke-test marker — forward leg (monorepo → subrepo), 2026-05-28.
+
 ## 2.2.0
 
 ### Changes