diff --git a/specification/20_client_server_api.rst b/specification/20_client_server_api.rst
index 7e06cdd0..af071d6f 100644
--- a/specification/20_client_server_api.rst
+++ b/specification/20_client_server_api.rst
@@ -1,5 +1,7 @@
-Client-Server API
-=================
+Client-Server API v1
+====================
+
+This outlines version 1 of the client-server API.
 
 Registration and Login
 ----------------------