diff --git a/doc/CREDITS.txt b/doc/CREDITS.txt
index faead36b354111da04ed2630bbf75d838b0f38d7..90dd79ad44328ac864f86b5e8e1d3c185951a231 100644
--- a/doc/CREDITS.txt
+++ b/doc/CREDITS.txt
@@ -136,4 +136,5 @@ Dechaume, Jose Paulo Moitinho de Almeida, Thomas Pinchard, Corrado Chisari, Axel
 Hackbarth, Peter Wainwright, Jiri Hnidek, Thierry Thomas, Konstantinos Poulios,
 Laurent Van Miegroet, Shahrokh Ghavamian, Geordie McBain, Jose Paulo Moitinho de
 Almeida, Guillaume Demesy, Wendy Merks-Swolfs, Cosmin Stefan Deaconu, Nigel
-Nunn, Serban Georgescu, Julien Troufflard, Michele Mocciola.
+Nunn, Serban Georgescu, Julien Troufflard, Michele Mocciola, Matthijs Sypkens
+Smit.