diff --git a/.well-known/matrix/client b/.well-known/matrix/client
index b880dcd..439f70a 100644
--- a/.well-known/matrix/client
+++ b/.well-known/matrix/client
@@ -2,5 +2,8 @@
   "m.homeserver": {
     "base_url": "https://matrix.arcticfoxes.net",
     "server_name": "arcticfoxes.net"
+  },
+  "org.matrix.msc3575.proxy": {
+    "url": "https://syncv3.arcticfoxes.net"
   }
 }