diff --git a/CHANGES b/CHANGES
index 01c7fc854641d43c6baa120694d852ad3061abf7..b5d1a6024090021baa1ef224c93441ee52304245 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,8 @@
+Changes since 8.6.1
+===================
+
+- Fix #6677: Critical bug with VM and universes.
+
 Changes from 8.6 to 8.6.1
 =========================