diff --git a/EXAMPLES b/EXAMPLES
index d80bb592d..3c46d77cf 100644
--- a/EXAMPLES
+++ b/EXAMPLES
@@ -153,6 +153,7 @@ Documentation using a custom theme/integrated in a site
 * OpenLayers: http://docs.openlayers.org/
 * PyEphem: http://rhodesmill.org/pyephem/
 * German Plone 4.0 user manual: http://www.hasecke.com/plone-benutzerhandbuch/4.0/
+* PSI4: http://sirius.chem.vt.edu/psi4manual/latest/index.html
 * Pylons: http://pylonshq.com/docs/en/0.9.7/
 * PyMOTW: http://www.doughellmann.com/PyMOTW/
 * pypol: http://pypol.altervista.org/ (celery)