diff --git a/sdclientapi/__init__.py b/sdclientapi/__init__.py
index 37729d9..663de04 100644
--- a/sdclientapi/__init__.py
+++ b/sdclientapi/__init__.py
@@ -191,6 +191,9 @@ def _send_rpc_json_request(
         if headers is not None and headers:
             data["headers"] = headers
 
+        if timeout:
+            data["timeout"] = timeout
+
         data_str = json.dumps(data)
 
         try: