diff --git a/CREDITS.txt b/CREDITS.txt
index f8d4f14e6..772bd36b9 100644
--- a/CREDITS.txt
+++ b/CREDITS.txt
@@ -1707,3 +1707,4 @@ Fabrice Debonnet
 James Laver
 Kevin Bowens
 David Frech
+Udo Kastenholz