diff --git a/CREDITS.txt b/CREDITS.txt
index df3271f1f..29f633dc3 100644
--- a/CREDITS.txt
+++ b/CREDITS.txt
@@ -1260,3 +1260,4 @@ Morten Myklebust
 Ferenc Kunkli
 Josh Kraker  
 Roger Bergevin
+Geoff Sim