Update copyright year and https url
diff --git a/NOTICE b/NOTICE
index 86d4dfe..35c2b63 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,5 +1,5 @@
    Apache log4net
-   Copyright 2004-2017 The Apache Software Foundation
+   Copyright 2004-2021 The Apache Software Foundation
 
    This product includes software developed at
-   The Apache Software Foundation (http://www.apache.org/).
+   The Apache Software Foundation (https://www.apache.org/).