diff --git a/OPENAPI_VERSION b/OPENAPI_VERSION
index a73f40111..fbfcb5282 100644
--- a/OPENAPI_VERSION
+++ b/OPENAPI_VERSION
@@ -1 +1 @@
-v1433
\ No newline at end of file
+v1435
\ No newline at end of file
diff --git a/stripe/billing_portal/_configuration.py b/stripe/billing_portal/_configuration.py
index d5470243c..96e795e51 100644
--- a/stripe/billing_portal/_configuration.py
+++ b/stripe/billing_portal/_configuration.py
@@ -106,9 +106,7 @@ class CancellationReason(StripeObject):
             """
             Whether to cancel subscriptions immediately or at the end of the billing period.
             """
-            proration_behavior: Literal[
-                "always_invoice", "create_prorations", "none"
-            ]
+            proration_behavior: Literal["create_prorations", "none"]
             """
             Whether to create prorations when canceling subscriptions. Possible values are `none` and `create_prorations`.
             """
@@ -304,9 +302,7 @@ class CreateParamsFeaturesSubscriptionCancel(TypedDict):
         """
         Whether to cancel subscriptions immediately or at the end of the billing period.
         """
-        proration_behavior: NotRequired[
-            Literal["always_invoice", "create_prorations", "none"]
-        ]
+        proration_behavior: NotRequired[Literal["create_prorations", "none"]]
         """
         Whether to create prorations when canceling subscriptions. Possible values are `none` and `create_prorations`, which is only compatible with `mode=immediately`. No prorations are generated when canceling a subscription at the end of its natural billing period.
         """
@@ -542,9 +538,7 @@ class ModifyParamsFeaturesSubscriptionCancel(TypedDict):
         """
         Whether to cancel subscriptions immediately or at the end of the billing period.
         """
-        proration_behavior: NotRequired[
-            Literal["always_invoice", "create_prorations", "none"]
-        ]
+        proration_behavior: NotRequired[Literal["create_prorations", "none"]]
         """
         Whether to create prorations when canceling subscriptions. Possible values are `none` and `create_prorations`, which is only compatible with `mode=immediately`. No prorations are generated when canceling a subscription at the end of its natural billing period.
         """
diff --git a/stripe/billing_portal/_configuration_service.py b/stripe/billing_portal/_configuration_service.py
index ae3a1e47c..6cde474ff 100644
--- a/stripe/billing_portal/_configuration_service.py
+++ b/stripe/billing_portal/_configuration_service.py
@@ -123,9 +123,7 @@ class CreateParamsFeaturesSubscriptionCancel(TypedDict):
         """
         Whether to cancel subscriptions immediately or at the end of the billing period.
         """
-        proration_behavior: NotRequired[
-            Literal["always_invoice", "create_prorations", "none"]
-        ]
+        proration_behavior: NotRequired[Literal["create_prorations", "none"]]
         """
         Whether to create prorations when canceling subscriptions. Possible values are `none` and `create_prorations`, which is only compatible with `mode=immediately`. No prorations are generated when canceling a subscription at the end of its natural billing period.
         """
@@ -367,9 +365,7 @@ class UpdateParamsFeaturesSubscriptionCancel(TypedDict):
         """
         Whether to cancel subscriptions immediately or at the end of the billing period.
         """
-        proration_behavior: NotRequired[
-            Literal["always_invoice", "create_prorations", "none"]
-        ]
+        proration_behavior: NotRequired[Literal["create_prorations", "none"]]
         """
         Whether to create prorations when canceling subscriptions. Possible values are `none` and `create_prorations`, which is only compatible with `mode=immediately`. No prorations are generated when canceling a subscription at the end of its natural billing period.
         """