diff --git a/nuget.mirror.config b/nuget.mirror.config
index 1825e29..bd177cf 100644
--- a/nuget.mirror.config
+++ b/nuget.mirror.config
@@ -6,7 +6,9 @@
 <configuration>
   <packageSources>
     <clear />
-    <add key="nexus-nuget" value="http://mirror:8081/repository/nuget-proxy/index.json" protocolVersion="3" />
+    <!-- nuget-group aggregates nuget.org-proxy (Liara) + nuget-runflare-proxy (Runflare).
+         If Liara is down, Nexus automatically falls back to Runflare. -->
+    <add key="nexus-nuget" value="http://mirror:8081/repository/nuget-group/index.json" protocolVersion="3" />
   </packageSources>
   <config>
     <add key="http_retry_count" value="8" />