diff --git a/Doc/ACKS.txt b/Doc/ACKS.txt
index f695403eba2..fcbdad7d7c7 100644
--- a/Doc/ACKS.txt
+++ b/Doc/ACKS.txt
@@ -103,6 +103,7 @@ docs@python.org), and we'll be glad to correct the problem.
 * Detlef Lannert
 * Piers Lauder
 * Glyph Lefkowitz
+* Robert Lehmann
 * Marc-André Lemburg
 * Ulf A. Lindgren
 * Everett Lipman