diff --git a/CREDITS.txt b/CREDITS.txt
index 044389a5c..0d9844b77 100644
--- a/CREDITS.txt
+++ b/CREDITS.txt
@@ -1629,3 +1629,5 @@ Romane Oughlissi
 Alexander Maciol
 Udo Kastenholz
 Jacek Wielogórski
+Siegfried Preißler
+Bernard Mohamedaly