diff --git a/libs/sdk-py/langgraph_sdk/auth/__init__.py b/libs/sdk-py/langgraph_sdk/auth/__init__.py
index e0dff9c49..01dfd9143 100644
--- a/libs/sdk-py/langgraph_sdk/auth/__init__.py
+++ b/libs/sdk-py/langgraph_sdk/auth/__init__.py
@@ -195,7 +195,7 @@ class Auth:
             - authorization (str | None): The Authorization header value (e.g., "Bearer <token>")
 
         Args:
-            fn (Callable): The authentication handler function to register.
+            fn: The authentication handler function to register.
                 Must return a representation of the user. This could be a:
                     - string (the user id)
                     - dict containing {"identity": str, "permissions": list[str]}
diff --git a/libs/sdk-py/langgraph_sdk/auth/exceptions.py b/libs/sdk-py/langgraph_sdk/auth/exceptions.py
index cd3019259..52b4de668 100644
--- a/libs/sdk-py/langgraph_sdk/auth/exceptions.py
+++ b/libs/sdk-py/langgraph_sdk/auth/exceptions.py
@@ -10,10 +10,10 @@ class HTTPException(Exception):
     Since this is defined in the auth module, we default to a 401 status code.
 
     Args:
-        status_code (int, optional): HTTP status code for the error. Defaults to 401 "Unauthorized".
-        detail (str | None, optional): Detailed error message. If None, uses a default
+        status_code: HTTP status code for the error. Defaults to 401 "Unauthorized".
+        detail: Detailed error message. If None, uses a default
             message based on the status code.
-        headers (typing.Mapping[str, str] | None, optional): Additional HTTP headers to
+        headers: Additional HTTP headers to
             include in the error response.
 
     Example: