diff --git a/.stats.yml b/.stats.yml
index b1872c09..147f6727 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 101
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-1720084d65e39f50455fe3a8756afc68fedf57306a727f92e4d020c28878df87.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-ac2f736602bc631b92de358a7edb395cf53ed506b2cb3d0494fffa31be9e2d9f.yml
diff --git a/src/orb/resources/subscriptions.py b/src/orb/resources/subscriptions.py
index a377b5fa..96863c6c 100644
--- a/src/orb/resources/subscriptions.py
+++ b/src/orb/resources/subscriptions.py
@@ -1578,7 +1578,8 @@ def schedule_plan_change(
               billing cycle alignment.
 
           change_date: The date that the plan change should take effect. This parameter can only be
-              passed if the `change_option` is `requested_date`.
+              passed if the `change_option` is `requested_date`. If a date with no time is
+              passed, the plan change will happen at midnight in the customer's timezone.
 
           coupon_redemption_code: Redemption code to be used for this subscription. If the coupon cannot be found
               by its redemption code, or cannot be redeemed, an error response will be
@@ -3541,7 +3542,8 @@ async def schedule_plan_change(
               billing cycle alignment.
 
           change_date: The date that the plan change should take effect. This parameter can only be
-              passed if the `change_option` is `requested_date`.
+              passed if the `change_option` is `requested_date`. If a date with no time is
+              passed, the plan change will happen at midnight in the customer's timezone.
 
           coupon_redemption_code: Redemption code to be used for this subscription. If the coupon cannot be found
               by its redemption code, or cannot be redeemed, an error response will be
diff --git a/src/orb/types/subscription_schedule_plan_change_params.py b/src/orb/types/subscription_schedule_plan_change_params.py
index 6b3c7074..49d63699 100644
--- a/src/orb/types/subscription_schedule_plan_change_params.py
+++ b/src/orb/types/subscription_schedule_plan_change_params.py
@@ -212,7 +212,9 @@ class SubscriptionSchedulePlanChangeParams(TypedDict, total=False):
     change_date: Annotated[Union[str, datetime, None], PropertyInfo(format="iso8601")]
     """The date that the plan change should take effect.
 
-    This parameter can only be passed if the `change_option` is `requested_date`.
+    This parameter can only be passed if the `change_option` is `requested_date`. If
+    a date with no time is passed, the plan change will happen at midnight in the
+    customer's timezone.
     """
 
     coupon_redemption_code: Optional[str]