diff --git a/Misc/ACKS b/Misc/ACKS
index 0ce586e..b389f77 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -444,6 +444,7 @@
 Vincent Legoll
 Kip Lehman
 Joerg Lehmann
+Robert Lehmann
 Luke Kenneth Casson Leighton
 Marc-Andre Lemburg
 John Lenton