diff --git a/stripe/_request_options.py b/stripe/_request_options.py
index 0fd5b91ce..715eef768 100644
--- a/stripe/_request_options.py
+++ b/stripe/_request_options.py
@@ -4,7 +4,6 @@
 
 class RequestOptions(TypedDict):
     api_key: NotRequired[Optional[str]]
-    api_base: NotRequired[Optional[str]]
     stripe_version: NotRequired[Optional[str]]
     stripe_account: NotRequired[Optional[str]]
     idempotency_key: NotRequired[Optional[str]]