diff --git a/Misc/ACKS b/Misc/ACKS
index a20550e..1c1b372 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -638,6 +638,7 @@
 John Redford
 Terry Reedy
 Steve Reeves
+Lennart Regebro
 Ofir Reichenberg
 Sean Reifschneider
 Michael P. Reilly