diff --git a/Misc/ACKS b/Misc/ACKS
index 028f99a..a98bab7 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -449,6 +449,7 @@
 Peter van Kampen
 Rafe Kaplan
 Jacob Kaplan-Moss
+Jan Kaliszewski
 Arkady Koplyarov
 Lou Kates
 Hiroaki Kawai