diff --git a/bfxapi/rest/_interfaces/rest_auth_endpoints.py b/bfxapi/rest/_interfaces/rest_auth_endpoints.py
index f00c013..6c34b14 100644
--- a/bfxapi/rest/_interfaces/rest_auth_endpoints.py
+++ b/bfxapi/rest/_interfaces/rest_auth_endpoints.py
@@ -1,5 +1,5 @@
 from decimal import Decimal
-from typing import Dict, List, Literal, Optional, Tuple, Union
+from typing import Any, Dict, List, Literal, Optional, Tuple, Union
 
 from bfxapi.rest._interface import Interface
 from bfxapi.types import (
@@ -98,6 +98,7 @@ def submit_order(
         cid: Optional[int] = None,
         flags: Optional[int] = None,
         tif: Optional[str] = None,
+        meta: Optional[Dict[str, Any]] = None,
     ) -> Notification[Order]:
         body = {
             "type": type,
@@ -112,6 +113,7 @@ def submit_order(
             "cid": cid,
             "flags": flags,
             "tif": tif,
+            "meta": meta,
         }
 
         return _Notification[Order](serializers.Order).parse(
diff --git a/bfxapi/websocket/_client/bfx_websocket_inputs.py b/bfxapi/websocket/_client/bfx_websocket_inputs.py
index d618135..48a39d1 100644
--- a/bfxapi/websocket/_client/bfx_websocket_inputs.py
+++ b/bfxapi/websocket/_client/bfx_websocket_inputs.py
@@ -1,5 +1,5 @@
 from decimal import Decimal
-from typing import Any, Awaitable, Callable, List, Optional, Tuple, Union
+from typing import Any, Awaitable, Callable, Dict, List, Optional, Tuple, Union
 
 _Handler = Callable[[str, Any], Awaitable[None]]
 
@@ -23,6 +23,7 @@ async def submit_order(
         cid: Optional[int] = None,
         flags: Optional[int] = None,
         tif: Optional[str] = None,
+        meta: Optional[Dict[str, Any]] = None,
     ) -> None:
         await self.__handle_websocket_input(
             "on",
@@ -39,6 +40,7 @@ async def submit_order(
                 "cid": cid,
                 "flags": flags,
                 "tif": tif,
+                "meta": meta,
             },
         )