Update ACKS
diff --git a/Misc/ACKS b/Misc/ACKS
index ee25ad1..82cd4a3 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -239,6 +239,7 @@
 Peter Funk
 Geoff Furnish
 Ulisses Furquim
+Hagen Fürstenau
 Achim Gaedke
 Martin von Gagern
 Lele Gaifax