Explicitely aim for SR2 in the case of Papyrus
diff --git a/downloads/discovery/luna/modeling.xmi b/downloads/discovery/luna/modeling.xmi
index 4757399..edcf5ff 100755
--- a/downloads/discovery/luna/modeling.xmi
+++ b/downloads/discovery/luna/modeling.xmi
@@ -181,7 +181,7 @@
         description="Papyrus provides an integrated, user-consumable environment for editing models based on UML and other related languages such as SysML."
         license="EPL"
         image32="images/papyrus.png">
-      <sitesURLS>http://download.eclipse.org/releases/luna/</sitesURLS>
+      <sitesURLS>http://download.eclipse.org/releases/luna/201502271000</sitesURLS>
       <overview
           summary="Papyrus is an open source component of the&#xA;Model Development Tools (MDT) subproject to provide an integrated environment&#xA;for editing UML and SysML models. Specially, this project will provide the glue&#xA;around valuable UML and SysML diagram editors (GMF-based or not) and other MDE&#xA;tools. It will also offer support for UML and SysML profiling mechanisms."
           screenshot="images/papyrus-screenshot-320x240.png"