diff --git a/openapi/api.yaml b/openapi/api.yaml
index 4b7fc13e..d4df83eb 100644
--- a/openapi/api.yaml
+++ b/openapi/api.yaml
@@ -17229,7 +17229,8 @@ components:
           type: number
           format: float
           title: Subtotal
-          description: The summation of charges, discounts, and credits, before tax.
+          description: The summation of charges and credits, before discounts and
+            taxes.
         tax:
           type: number
           format: float
@@ -19596,6 +19597,18 @@ components:
           format: date-time
           title: Deleted at
           readOnly: true
+        billing_info:
+          "$ref": "#/components/schemas/SubscriptionChangeBillingInfo"
+    SubscriptionChangeBillingInfo:
+      type: object
+      description: Accept nested attributes for three_d_secure_action_result_token_id
+      properties:
+        three_d_secure_action_result_token_id:
+          type: string
+          title: 3-D Secure action result token ID
+          description: A token generated by Recurly.js after completing a 3-D Secure
+            device fingerprinting or authentication challenge.
+          maxLength: 22
     SubscriptionChangeCreate:
       type: object
       properties:
diff --git a/recurly/resources.py b/recurly/resources.py
index a4112c1b..f4ef5a62 100644
--- a/recurly/resources.py
+++ b/recurly/resources.py
@@ -1109,7 +1109,7 @@ class Invoice(Resource):
     subscription_ids : :obj:`list` of :obj:`str`
         If the invoice is charging or refunding for one or more subscriptions, these are their IDs.
     subtotal : float
-        The summation of charges, discounts, and credits, before tax.
+        The summation of charges and credits, before discounts and taxes.
     tax : float
         The total tax on this invoice.
     tax_info : TaxInfo
@@ -1716,6 +1716,8 @@ class SubscriptionChange(Resource):
         Returns `true` if the subscription change is activated.
     add_ons : :obj:`list` of :obj:`SubscriptionAddOn`
         These add-ons will be used when the subscription renews.
+    billing_info : SubscriptionChangeBillingInfo
+        Accept nested attributes for three_d_secure_action_result_token_id
     created_at : datetime
         Created at
     custom_fields : :obj:`list` of :obj:`CustomField`
@@ -1748,6 +1750,7 @@ class SubscriptionChange(Resource):
         "activate_at": datetime,
         "activated": bool,
         "add_ons": ["SubscriptionAddOn"],
+        "billing_info": "SubscriptionChangeBillingInfo",
         "created_at": datetime,
         "custom_fields": ["CustomField"],
         "deleted_at": datetime,
@@ -1893,6 +1896,17 @@ class SubscriptionAddOnTier(Resource):
     }
 
 
+class SubscriptionChangeBillingInfo(Resource):
+    """
+    Attributes
+    ----------
+    three_d_secure_action_result_token_id : str
+        A token generated by Recurly.js after completing a 3-D Secure device fingerprinting or authentication challenge.
+    """
+
+    schema = {"three_d_secure_action_result_token_id": str}
+
+
 class UniqueCouponCodeParams(Resource):
     """
     Attributes