diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 98144b04..efb39fad 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "4.65.0"
+  ".": "4.66.0"
 }
diff --git a/.stats.yml b/.stats.yml
index 715ea230..b21f5baa 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 103
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-48084a007f009b4358484f09a3a7b74a990c402669f9d15adfbb60e4f835f951.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-a2c1aa029d1e72a5fc7d3c6cd431479888ebd9a379683a2c8630da48437baa4f.yml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 62c1b83a..fece648f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 4.66.0 (2025-03-06)
+
+Full Changelog: [v4.65.0...v4.66.0](https://github.com/orbcorp/orb-node/compare/v4.65.0...v4.66.0)
+
+### Features
+
+* **api:** api update ([#544](https://github.com/orbcorp/orb-node/issues/544)) ([d43b512](https://github.com/orbcorp/orb-node/commit/d43b512262570b00b11baf747fff694f54a66684))
+
 ## 4.65.0 (2025-03-05)
 
 Full Changelog: [v4.64.0...v4.65.0](https://github.com/orbcorp/orb-node/compare/v4.64.0...v4.65.0)
diff --git a/package.json b/package.json
index 192a6208..037ac848 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "orb-billing",
-  "version": "4.65.0",
+  "version": "4.66.0",
   "description": "The official TypeScript library for the Orb API",
   "author": "Orb <team@withorb.com>",
   "types": "dist/index.d.ts",
diff --git a/src/resources/invoice-line-items.ts b/src/resources/invoice-line-items.ts
index 46fd7463..aa34129d 100644
--- a/src/resources/invoice-line-items.ts
+++ b/src/resources/invoice-line-items.ts
@@ -31,7 +31,9 @@ export interface InvoiceLineItemCreateResponse {
   adjusted_subtotal: string;
 
   /**
-   * All adjustments (ie. maximums, minimums, discounts) applied to the line item.
+   * All adjustments applied to the line item in the order they were applied based on
+   * invoice calculations (ie. usage discounts -> amount discounts -> percentage
+   * discounts -> minimums -> maximums).
    */
   adjustments: Array<
     | InvoiceLineItemCreateResponse.MonetaryUsageDiscountAdjustment
diff --git a/src/resources/invoices.ts b/src/resources/invoices.ts
index 8778189a..2ccd2a43 100644
--- a/src/resources/invoices.ts
+++ b/src/resources/invoices.ts
@@ -858,7 +858,9 @@ export namespace Invoice {
     adjusted_subtotal: string;
 
     /**
-     * All adjustments (ie. maximums, minimums, discounts) applied to the line item.
+     * All adjustments applied to the line item in the order they were applied based on
+     * invoice calculations (ie. usage discounts -> amount discounts -> percentage
+     * discounts -> minimums -> maximums).
      */
     adjustments: Array<
       | LineItem.MonetaryUsageDiscountAdjustment
@@ -2079,7 +2081,9 @@ export namespace InvoiceFetchUpcomingResponse {
     adjusted_subtotal: string;
 
     /**
-     * All adjustments (ie. maximums, minimums, discounts) applied to the line item.
+     * All adjustments applied to the line item in the order they were applied based on
+     * invoice calculations (ie. usage discounts -> amount discounts -> percentage
+     * discounts -> minimums -> maximums).
      */
     adjustments: Array<
       | LineItem.MonetaryUsageDiscountAdjustment
diff --git a/src/resources/subscriptions.ts b/src/resources/subscriptions.ts
index 292186d9..da00cc22 100644
--- a/src/resources/subscriptions.ts
+++ b/src/resources/subscriptions.ts
@@ -1090,7 +1090,8 @@ export interface Subscription {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<Subscription.AdjustmentInterval>;
 
@@ -1156,7 +1157,7 @@ export interface Subscription {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | Subscription.AmountDiscountInterval
@@ -1174,7 +1175,7 @@ export interface Subscription {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<Subscription.MaximumInterval>;
 
@@ -1187,7 +1188,7 @@ export interface Subscription {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<Subscription.MinimumInterval>;
 
@@ -1787,7 +1788,8 @@ export interface SubscriptionCreateResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionCreateResponse.AdjustmentInterval>;
 
@@ -1853,7 +1855,7 @@ export interface SubscriptionCreateResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionCreateResponse.AmountDiscountInterval
@@ -1871,7 +1873,7 @@ export interface SubscriptionCreateResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionCreateResponse.MaximumInterval>;
 
@@ -1884,7 +1886,7 @@ export interface SubscriptionCreateResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionCreateResponse.MinimumInterval>;
 
@@ -2402,7 +2404,8 @@ export interface SubscriptionCancelResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionCancelResponse.AdjustmentInterval>;
 
@@ -2468,7 +2471,7 @@ export interface SubscriptionCancelResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionCancelResponse.AmountDiscountInterval
@@ -2486,7 +2489,7 @@ export interface SubscriptionCancelResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionCancelResponse.MaximumInterval>;
 
@@ -2499,7 +2502,7 @@ export interface SubscriptionCancelResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionCancelResponse.MinimumInterval>;
 
@@ -3095,7 +3098,8 @@ export interface SubscriptionPriceIntervalsResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionPriceIntervalsResponse.AdjustmentInterval>;
 
@@ -3161,7 +3165,7 @@ export interface SubscriptionPriceIntervalsResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionPriceIntervalsResponse.AmountDiscountInterval
@@ -3179,7 +3183,7 @@ export interface SubscriptionPriceIntervalsResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionPriceIntervalsResponse.MaximumInterval>;
 
@@ -3192,7 +3196,7 @@ export interface SubscriptionPriceIntervalsResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionPriceIntervalsResponse.MinimumInterval>;
 
@@ -3710,7 +3714,8 @@ export interface SubscriptionSchedulePlanChangeResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionSchedulePlanChangeResponse.AdjustmentInterval>;
 
@@ -3776,7 +3781,7 @@ export interface SubscriptionSchedulePlanChangeResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionSchedulePlanChangeResponse.AmountDiscountInterval
@@ -3794,7 +3799,7 @@ export interface SubscriptionSchedulePlanChangeResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionSchedulePlanChangeResponse.MaximumInterval>;
 
@@ -3807,7 +3812,7 @@ export interface SubscriptionSchedulePlanChangeResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionSchedulePlanChangeResponse.MinimumInterval>;
 
@@ -4325,7 +4330,8 @@ export interface SubscriptionTriggerPhaseResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionTriggerPhaseResponse.AdjustmentInterval>;
 
@@ -4391,7 +4397,7 @@ export interface SubscriptionTriggerPhaseResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionTriggerPhaseResponse.AmountDiscountInterval
@@ -4409,7 +4415,7 @@ export interface SubscriptionTriggerPhaseResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionTriggerPhaseResponse.MaximumInterval>;
 
@@ -4422,7 +4428,7 @@ export interface SubscriptionTriggerPhaseResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionTriggerPhaseResponse.MinimumInterval>;
 
@@ -4940,7 +4946,8 @@ export interface SubscriptionUnscheduleCancellationResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionUnscheduleCancellationResponse.AdjustmentInterval>;
 
@@ -5006,7 +5013,7 @@ export interface SubscriptionUnscheduleCancellationResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionUnscheduleCancellationResponse.AmountDiscountInterval
@@ -5024,7 +5031,7 @@ export interface SubscriptionUnscheduleCancellationResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionUnscheduleCancellationResponse.MaximumInterval>;
 
@@ -5037,7 +5044,7 @@ export interface SubscriptionUnscheduleCancellationResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionUnscheduleCancellationResponse.MinimumInterval>;
 
@@ -5555,7 +5562,8 @@ export interface SubscriptionUnscheduleFixedFeeQuantityUpdatesResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionUnscheduleFixedFeeQuantityUpdatesResponse.AdjustmentInterval>;
 
@@ -5621,7 +5629,7 @@ export interface SubscriptionUnscheduleFixedFeeQuantityUpdatesResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionUnscheduleFixedFeeQuantityUpdatesResponse.AmountDiscountInterval
@@ -5639,7 +5647,7 @@ export interface SubscriptionUnscheduleFixedFeeQuantityUpdatesResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionUnscheduleFixedFeeQuantityUpdatesResponse.MaximumInterval>;
 
@@ -5652,7 +5660,7 @@ export interface SubscriptionUnscheduleFixedFeeQuantityUpdatesResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionUnscheduleFixedFeeQuantityUpdatesResponse.MinimumInterval>;
 
@@ -6170,7 +6178,8 @@ export interface SubscriptionUnschedulePendingPlanChangesResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionUnschedulePendingPlanChangesResponse.AdjustmentInterval>;
 
@@ -6236,7 +6245,7 @@ export interface SubscriptionUnschedulePendingPlanChangesResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionUnschedulePendingPlanChangesResponse.AmountDiscountInterval
@@ -6254,7 +6263,7 @@ export interface SubscriptionUnschedulePendingPlanChangesResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionUnschedulePendingPlanChangesResponse.MaximumInterval>;
 
@@ -6267,7 +6276,7 @@ export interface SubscriptionUnschedulePendingPlanChangesResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionUnschedulePendingPlanChangesResponse.MinimumInterval>;
 
@@ -6785,7 +6794,8 @@ export interface SubscriptionUpdateFixedFeeQuantityResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionUpdateFixedFeeQuantityResponse.AdjustmentInterval>;
 
@@ -6851,7 +6861,7 @@ export interface SubscriptionUpdateFixedFeeQuantityResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionUpdateFixedFeeQuantityResponse.AmountDiscountInterval
@@ -6869,7 +6879,7 @@ export interface SubscriptionUpdateFixedFeeQuantityResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionUpdateFixedFeeQuantityResponse.MaximumInterval>;
 
@@ -6882,7 +6892,7 @@ export interface SubscriptionUpdateFixedFeeQuantityResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionUpdateFixedFeeQuantityResponse.MinimumInterval>;
 
@@ -7400,7 +7410,8 @@ export interface SubscriptionUpdateTrialResponse {
   active_plan_phase_order: number | null;
 
   /**
-   * The adjustment intervals for this subscription.
+   * The adjustment intervals for this subscription sorted by the start_date of the
+   * adjustment interval.
    */
   adjustment_intervals: Array<SubscriptionUpdateTrialResponse.AdjustmentInterval>;
 
@@ -7466,7 +7477,7 @@ export interface SubscriptionUpdateTrialResponse {
   default_invoice_memo: string | null;
 
   /**
-   * The discount intervals for this subscription.
+   * The discount intervals for this subscription sorted by the start_date.
    */
   discount_intervals: Array<
     | SubscriptionUpdateTrialResponse.AmountDiscountInterval
@@ -7484,7 +7495,7 @@ export interface SubscriptionUpdateTrialResponse {
   invoicing_threshold: string | null;
 
   /**
-   * The maximum intervals for this subscription.
+   * The maximum intervals for this subscription sorted by the start_date.
    */
   maximum_intervals: Array<SubscriptionUpdateTrialResponse.MaximumInterval>;
 
@@ -7497,7 +7508,7 @@ export interface SubscriptionUpdateTrialResponse {
   metadata: Record<string, string>;
 
   /**
-   * The minimum intervals for this subscription.
+   * The minimum intervals for this subscription sorted by the start_date.
    */
   minimum_intervals: Array<SubscriptionUpdateTrialResponse.MinimumInterval>;
 
diff --git a/src/version.ts b/src/version.ts
index db5c3bcf..3da94762 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const VERSION = '4.65.0'; // x-release-please-version
+export const VERSION = '4.66.0'; // x-release-please-version