diff --git a/Misc/ACKS b/Misc/ACKS
index fb62b5b..6f80ab7 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1120,6 +1120,7 @@
 Douglas Orr
 William Orr
 Michele Orrù
+Tomáš Orsava
 Oleg Oshmyan
 Denis S. Otkidach
 Peter Otten