diff --git a/src/lithic/__init__.py b/src/lithic/__init__.py
index 8b7691d9..f9fb6c18 100644
--- a/src/lithic/__init__.py
+++ b/src/lithic/__init__.py
@@ -1,7 +1,7 @@
 # File generated from our OpenAPI spec by Stainless.
 
 from . import types
-from ._types import NoneType, Transport, ProxiesTypes
+from ._types import NOT_GIVEN, NoneType, NotGiven, Transport, ProxiesTypes
 from ._utils import file_from_path
 from ._client import (
     ENVIRONMENTS,
@@ -43,6 +43,8 @@
     "NoneType",
     "Transport",
     "ProxiesTypes",
+    "NotGiven",
+    "NOT_GIVEN",
     "LithicError",
     "APIError",
     "APIStatusError",