diff --git a/util/copyrights b/util/copyrights
index dd9574ef6e..a274c52a9d 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -2457,6 +2457,7 @@
 ./lib/dns/tests/.cvsignore			X	2011
 ./lib/dns/tests/Atffile				X	2011
 ./lib/dns/tests/Makefile.in			MAKE	2011
+./lib/dns/tests/dbdiff_test.c			C	2011
 ./lib/dns/tests/dbiterator_test.c		C	2011
 ./lib/dns/tests/dbversion_test.c		C	2011
 ./lib/dns/tests/dnstest.c			C	2011
@@ -2465,6 +2466,9 @@
 ./lib/dns/tests/private_test.c			C	2011
 ./lib/dns/tests/testdata/dbiterator/zone1.data	ZONE	2011
 ./lib/dns/tests/testdata/dbiterator/zone2.data	X	2011
+./lib/dns/tests/testdata/diff/zone1.data	ZONE	2011
+./lib/dns/tests/testdata/diff/zone2.data	ZONE	2011
+./lib/dns/tests/testdata/diff/zone3.data	ZONE	2011
 ./lib/dns/tests/testdata/master/master1.data	X	2011
 ./lib/dns/tests/testdata/master/master10.data	X	2011
 ./lib/dns/tests/testdata/master/master11.data	X	2011