diff --git a/machines/heimdall/caddy/default.nix b/machines/heimdall/caddy/default.nix
index 83aa010..6924ac1 100644
--- a/machines/heimdall/caddy/default.nix
+++ b/machines/heimdall/caddy/default.nix
@@ -23,8 +23,8 @@
         extraConfig = ''
           header /.well-known/matrix/* Content-Type application/json
           header /.well-known/matrix/* Access-Control-Allow-Origin *
-          respond /.well-known/matrix/server `{"m.server": "matrix.boskma.frl:443"}`
-          respond /.well-known/matrix/client `{"m.homeserver": {"base_url": "https://matrix.boskma.frl"}}`
+          respond /.well-known/matrix/server `{"m.server":"matrix.boskma.frl:443"}`
+          respond /.well-known/matrix/client `{"m.homeserver": {"base_url":"https://matrix.boskma.frl"},"org.matrix.msc3575.proxy":{"url":"https://syncv3.boskma.frl"}}`
         '';
       };
 
@@ -33,6 +33,12 @@
           reverse_proxy /_matrix/* neo.barn-beaver.ts.net:8008
         '';
       };
+
+      "syncv3.boskma.frl" = {
+        extraConfig = ''
+          reverse_proxy / neo.barn-beaver.ts.net:8009
+        '';
+      };
     };
   };
 }