diff --git a/LICENSE b/LICENSE
index bb0eeaf..0c2241a 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,5 @@
-Copyright (c) 2008 Jeff Bezanson
+Copyright (c) 2008 Jeff Bezanson (FemtoLisp)
+Copyright (c) 2019 Lassi Kortela (UpScheme)
 
 All rights reserved.