diff --git a/stripe/api_resources/tax/registration.py b/stripe/api_resources/tax/registration.py
index 6a3725b52..55f5b09f9 100644
--- a/stripe/api_resources/tax/registration.py
+++ b/stripe/api_resources/tax/registration.py
@@ -706,7 +706,16 @@ class CreateParams(RequestOptions):
             If set, the Tax Registration stops being active at this time. If not set, the Tax Registration will be active indefinitely. Timestamp measured in seconds since the Unix epoch.
             """
 
-        class CreateParamsCountryOptions(TypedDict):
+        class CreateParamsCountryOptions(
+            TypedDict(
+                "CreateParamsCountryOptions",
+                {
+                    "is": NotRequired[
+                        "Registration.CreateParamsCountryOptionsIs"
+                    ],
+                },
+            ),
+        ):
             ae: NotRequired["Registration.CreateParamsCountryOptionsAe"]
             """
             Options for the registration in AE.