Goodbye 2020. Hello 2021. YES. (#3318)

diff --git a/NOTICE b/NOTICE
index e37a990..f6d6ee2 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,5 +1,5 @@
 Apache CouchDB
-Copyright 2009-2020 The Apache Software Foundation
+Copyright 2009-2021 The Apache Software Foundation
 
 This product includes software developed at
 The Apache Software Foundation (http://www.apache.org/).