diff --git a/services/communication/guest-register-configmap.yaml b/services/communication/guest-register-configmap.yaml
index 55a2d7f..78cc789 100644
--- a/services/communication/guest-register-configmap.yaml
+++ b/services/communication/guest-register-configmap.yaml
@@ -76,7 +76,7 @@ data:
             if parsed.path in ("/healthz", "/"):
                 return self._send_json(200, {"ok": True})
             if parsed.path in ("/_matrix/client/v3/register", "/_matrix/client/r0/register"):
-                return self._send_json(405, {"errcode": "M_UNRECOGNIZED", "error": "Unrecognized request"})
+                return self._send_json(200, {"flows": [{"stages": []}]})
             return self._send_json(404, {"errcode": "M_NOT_FOUND", "error": "not_found"})
 
         def do_POST(self):  # noqa: N802
diff --git a/services/communication/guest-register-deployment.yaml b/services/communication/guest-register-deployment.yaml
index 2eb625e..cd13f63 100644
--- a/services/communication/guest-register-deployment.yaml
+++ b/services/communication/guest-register-deployment.yaml
@@ -13,7 +13,7 @@ spec:
   template:
     metadata:
       annotations:
-        checksum/config: guest-register-proxy-2
+        checksum/config: guest-register-proxy-3
       labels:
         app.kubernetes.io/name: matrix-guest-register
     spec: