diff --git a/util/copyrights b/util/copyrights
index 79663d106d..4b6423d297 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -1443,7 +1443,7 @@
 ./lib/bind/isc/logging.c			X	2001,2005
 ./lib/bind/isc/logging.mdoc			X	2001
 ./lib/bind/isc/logging_p.h			X	2001,2005
-./lib/bind/isc/memcluster.c			X	2001,2005
+./lib/bind/isc/memcluster.c			X	2001,2005,2006
 ./lib/bind/isc/memcluster.mdoc			X	2001
 ./lib/bind/isc/movefile.c			X	2001,2005
 ./lib/bind/isc/tree.c				X	2001,2005