diff --git a/Doc/ACKS b/Doc/ACKS
index 746f424..b4bbc3f 100644
--- a/Doc/ACKS
+++ b/Doc/ACKS
@@ -63,6 +63,7 @@
 Stefan Hoffmeister
 Albert Hofkamp
 Gregor Hoffleit
+Steve Holden
 Gerrit Holl
 Rob Hooft
 Brian Hooper