--- a/rdf-concepts/index.html	Fri Jan 03 13:18:38 2014 +0100
+++ b/rdf-concepts/index.html	Fri Jan 03 13:24:27 2014 +0100
@@ -1327,8 +1327,8 @@
   <p>The editors acknowledge valuable contributions from Thomas Baker,
     Tim Berners-Lee, David Booth, Dan Brickley, Gavin Carothers, Jeremy Carroll,
     Pierre-Antoine Champin, Dan Connolly, John Cowan, Martin J. Dürst,
-    Alex Hall, Steve Harris, Pat Hayes, Ivan Herman, Peter F. Patel-Schneider,
-    Addison Phillips, Eric Prud'hommeaux, Andy Seaborne, Leif Halvard Silli,
+    Alex Hall, Steve Harris, Sandro Hawke, Pat Hayes, Ivan Herman, Peter F. Patel-Schneider,
+    Guus Schreiber, Addison Phillips, Eric Prud'hommeaux, Andy Seaborne, Leif Halvard Silli,
     Nathan Rixham, Dominik Tomaszuk, and Antoine Zimmermann.</p>
 
   <p>The membership of the RDF Working Group included Thomas Baker,