diff --git a/CREDITS.txt b/CREDITS.txt
index 28f3dbebe..a4e68f68a 100644
--- a/CREDITS.txt
+++ b/CREDITS.txt
@@ -1980,3 +1980,5 @@ Aleksandr Sarkisov
 Johannes Kuhne
 Kathleen Cilluffo
 David Hoffmann
+Alan Porter
+Arie Leendert Mooldijk