[releng] Use Oxygen RC1 Orbit
diff --git a/releng/org.eclipse.qvtd.releng.buckminster/releng/qvtd.rmap b/releng/org.eclipse.qvtd.releng.buckminster/releng/qvtd.rmap
index fdc1d76..27242d4 100644
--- a/releng/org.eclipse.qvtd.releng.buckminster/releng/qvtd.rmap
+++ b/releng/org.eclipse.qvtd.releng.buckminster/releng/qvtd.rmap
@@ -432,7 +432,7 @@
     <rm:provider componentTypes="eclipse.feature,osgi.bundle" resolutionFilter="(resolve.target.platform=true)" readerType="p2" source="false" mutable="false">
       <rm:property key="buckminster.source" value="false"/>
       <rm:property key="buckminster.mutable" value="false"/>
-      <rm:uri format="{0}/tools/orbit/downloads/drops/S20170306214312/repository/">
+      <rm:uri format="{0}/tools/orbit/downloads/drops/S20170516192513/repository/">
         <bc:propertyRef key="eclipse.download"/>
       </rm:uri>
     </rm:provider>