diff --git a/CHANGES b/CHANGES
index 98d3b80362..19c25c570f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -16,6 +16,11 @@
 6198.	[func]		Remove the holes in the isc_result_t enum to compact
 			the isc_result tables. [GL #4149]
 
+6197.	[bug]		Fix a data race between the dns_zone and dns_catz
+			modules when registering/unregistering a database
+			update notification callback for a catalog zone.
+			[GL #4132]
+
 6196.	[cleanup]	Report "permission denied" instead of "unexpected error"
 			when trying to update a zone file on a read-only file
 			system. Thanks to Midnight Veil. [GL #4134]