diff --git a/CREDITS.txt b/CREDITS.txt
index d8e04b6b6..044389a5c 100644
--- a/CREDITS.txt
+++ b/CREDITS.txt
@@ -1628,3 +1628,4 @@ Jean Paul Duroch
 Romane Oughlissi
 Alexander Maciol
 Udo Kastenholz
+Jacek Wielogórski