diff --git a/Misc/ACKS b/Misc/ACKS
index b794034e2ed..929f0f0f189 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -265,6 +265,7 @@ Stefan Norberg
 Jeffrey Ollie
 Nigel O'Brian
 Tim O'Malley
+Denis S. Otkidach
 Piet van Oostrum
 Jason Orendorff
 Todd R. Palmer