diff --git a/doc/realworld.html b/doc/realworld.html
index 4d8871d4b6574a1d1edd7d9a3ed58054b90518f3..7b7eeeaf1a2abd013bef2fefbd847691ed9960cc 100644
--- a/doc/realworld.html
+++ b/doc/realworld.html
@@ -39,7 +39,7 @@
       <li><a href="http://cargocollective.com/">Cargo Collective</a> (creative publishing platform)</li>
       <li><a href="https://developers.google.com/chrome-developer-tools/">Chrome DevTools</a></li>
       <li><a href="http://clickhelp.co/">ClickHelp</a> (technical writing tool)</li>
-      <li><a href="http://codeworld.info/">CodeWorld</a> (Haskell playground)</li>
+      <li><a href="http://code.world/">CodeWorld</a> (Haskell playground)</li>
       <li><a href="http://complete-ly.appspot.com/playground/code.playground.html">Complete.ly playground</a></li>
       <li><a href="https://codeanywhere.com/">Codeanywhere</a> (multi-platform cloud editor)</li>
       <li><a href="http://drupal.org/project/cpn">Code per Node</a> (Drupal module)</li>