diff --git a/CREDITS.txt b/CREDITS.txt
index a7c69bff2..4394e66db 100644
--- a/CREDITS.txt
+++ b/CREDITS.txt
@@ -1739,3 +1739,4 @@ James Thompson
 Dautremépuis Benoit
 Adriano Emanuele Figliola
 Stefano Bortolotti
+Gerald Zierer