diff --git a/README.md b/README.md
index 8592d55..d312428 100644
--- a/README.md
+++ b/README.md
@@ -143,5 +143,8 @@ Appears to work with:
 # License
 License: GPLv3 or any later version. Other code licensed under their own respective licenses.
 
+Upstream: Copyright (C) 2019, Oliver Keller
+
+
 Copyright (C) 2022, Jeff Moe