diff --git a/util/copyrights b/util/copyrights
index 1b37ef12f3..34adafbfaa 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -2130,7 +2130,7 @@
 ./lib/isc/backtrace-emptytbl.c			C	2009
 ./lib/isc/backtrace.c				C	2009
 ./lib/isc/base32.c				C	2008,2009
-./lib/isc/base64.c				C	1998,1999,2000,2001,2003,2004,2005,2007
+./lib/isc/base64.c				C	1998,1999,2000,2001,2003,2004,2005,2007,2009
 ./lib/isc/bitstring.c				C	1999,2000,2001,2004,2005,2007
 ./lib/isc/buffer.c				C	1998,1999,2000,2001,2002,2004,2005,2006,2007,2008
 ./lib/isc/bufferlist.c				C	1999,2000,2001,2004,2005,2007