diff --git a/CREDITS.txt b/CREDITS.txt
index f4eb7a375..d05842991 100644
--- a/CREDITS.txt
+++ b/CREDITS.txt
@@ -2220,4 +2220,7 @@ Richard Marotto
 Greg Bell
 Scott Geer
 Thomas Abshier
-  
+Ernst Camenzind
+Radomir Sterba
+Ignacio Barrio
+Bradley Murchie