diff --git a/services/communication/guest-register-configmap.yaml b/services/communication/guest-register-configmap.yaml
index 22c27e8..ef34a7c 100644
--- a/services/communication/guest-register-configmap.yaml
+++ b/services/communication/guest-register-configmap.yaml
@@ -13,7 +13,7 @@ data:
     SYNAPSE_BASE = os.environ.get("SYNAPSE_BASE", "http://othrys-synapse-matrix-synapse:8008").rstrip("/")
     GUEST_REGISTER_SHARED_SECRET = os.environ["GUEST_REGISTER_SHARED_SECRET"]
     GUEST_REGISTER_HEADER = os.environ.get("GUEST_REGISTER_HEADER", "x-guest-register-secret")
-    GUEST_REGISTER_PATH = os.environ.get("GUEST_REGISTER_PATH", "/_matrix/client/v3/_guest_register")
+    GUEST_REGISTER_PATH = os.environ.get("GUEST_REGISTER_PATH", "/_matrix/_guest_register")
 
     RATE_WINDOW_SEC = int(os.environ.get("RATE_WINDOW_SEC", "60"))
     RATE_MAX = int(os.environ.get("RATE_MAX", "30"))
diff --git a/services/communication/synapse-guest-register-module-configmap.yaml b/services/communication/synapse-guest-register-module-configmap.yaml
index 37da25d..8295f56 100644
--- a/services/communication/synapse-guest-register-module-configmap.yaml
+++ b/services/communication/synapse-guest-register-module-configmap.yaml
@@ -63,8 +63,7 @@ data:
         def __init__(self, config, api):
             shared_secret = config["shared_secret"]
             header_name = config.get("header_name", "x-guest-register-secret")
-            path = config.get("path", "/_matrix/client/v3/_guest_register")
+            path = config.get("path", "/_matrix/_guest_register")
 
             hs = api._hs  # noqa: SLF001
             api.register_web_resource(path, GuestRegisterResource(hs, shared_secret, header_name))
-
diff --git a/services/communication/synapse-rendered.yaml b/services/communication/synapse-rendered.yaml
index 749ae41..535e0e0 100644
--- a/services/communication/synapse-rendered.yaml
+++ b/services/communication/synapse-rendered.yaml
@@ -318,7 +318,7 @@ data:
         config:
           shared_secret: "@@GUEST_REGISTER_SECRET@@"
           header_name: x-guest-register-secret
-          path: /_matrix/client/v3/_guest_register
+          path: /_matrix/_guest_register
 
     ## Metrics ###