diff --git a/CHANGES b/CHANGES
index 873c1b948d..a3432c8c50 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,8 @@
+6387.	[func]		Added a new statistics variable "recursive high-water"
+			that reports the maximum number of simultaneous
+			recursive clients BIND has handled while running.
+			[GL #4668]
+
 6386.	[bug]		When shutting down catzs->view could point to freed
 			memory. Obtain a reference to the view to prevent this.
 			[GL #4502]
diff --git a/doc/notes/notes-current.rst b/doc/notes/notes-current.rst
index 133d75c2a3..0b57512d6e 100644
--- a/doc/notes/notes-current.rst
+++ b/doc/notes/notes-current.rst
@@ -20,7 +20,9 @@ Security Fixes
 New Features
 ~~~~~~~~~~~~
 
-- None.
+- Added a new statistics variable ``recursive high-water`` that reports
+  the maximum number of simultaneous recursive clients BIND has handled
+  while running. :gl:`#4668`
 
 Removed Features
 ~~~~~~~~~~~~~~~~