diff --git a/CREDITS.txt b/CREDITS.txt
index 4b96009dd..e03a17272 100644
--- a/CREDITS.txt
+++ b/CREDITS.txt
@@ -1540,3 +1540,4 @@ Thomas Halenbeck (monthly)
 Sjoerd Dost
 Ralph Gustafson
 Herbert Feix
+Robert Costford