diff --git a/specification/10_client_server_api.rst b/specification/10_client_server_api.rst
index 19e39625..60262811 100644
--- a/specification/10_client_server_api.rst
+++ b/specification/10_client_server_api.rst
@@ -151,6 +151,7 @@ that stage is complete.
 
 This specification defines the following login types:
  - ``m.login.password``
+ - ``m.login.recaptcha``
  - ``m.login.oauth2``
  - ``m.login.email.identity``
  - ``m.login.dummy``