diff --git a/ExistingProjects.mdwn b/ExistingProjects.mdwn
index edca62867009a635f54b31bfccb2ddd024553c4a..cd761ec199b3f4eab9ab73c131063a8bd733e25b 100644
--- a/ExistingProjects.mdwn
+++ b/ExistingProjects.mdwn
@@ -32,3 +32,4 @@ TODO:
 * [[ExistingProjects/ERP5]]
 * [[ExistingProjects/Garradin]] [Garradin's website](http://dev.kd2.org/garradin/)
 * [[ExistingProjects/Kuali]] [Kuali's website](http://www.kuali.org)
+* [[ExistingProjects/OpenPetra]] [OpenPetra's Website](http://www.openpetra.org)