Change copyright messages to include 2013.
diff --git a/debian/copyright b/debian/copyright
index 7b33fc6..f382eb8 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,4 +1,4 @@
-dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+dnsmasq is Copyright (c) 2000-2013 Simon Kelley
 
 It was downloaded from: http://www.thekelleys.org.uk/dnsmasq/