diff --git a/README.md b/README.md
index 064b547..3c7ca24 100644
--- a/README.md
+++ b/README.md
@@ -373,5 +373,7 @@ ANSI and ASCII artists: cmang, H7, LDA
 
 Durdraw is Copyright (c) 2009-2024 Sam Foster <samfoster@gmail.com>. All rights reserved.
 
+The BSD Daemon is Copyright 1988 by Marshall Kirk McKusick.
+
 This software is distributed under the BSD 3-Clause License. See LICENSE file for details.