Update ACKS.
diff --git a/Misc/ACKS b/Misc/ACKS
index ca9d4f2..18c304e 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -756,6 +756,7 @@
 Michael Scharf
 Neil Schemenauer
 David Scherer
+Hynek Schlawack
 Gregor Schmid
 Ralf Schmitt
 Michael Schneider