diff --git a/lib/recurly.d.ts b/lib/recurly.d.ts
index 3440fd72..5f29c2bc 100644
--- a/lib/recurly.d.ts
+++ b/lib/recurly.d.ts
@@ -1321,7 +1321,7 @@ export declare class ExternalSubscription {
    */
   quantity?: number | null;
   /**
-   * External subscriptions can be active, canceled, expired, or past_due.
+   * External subscriptions can be active, canceled, expired, past_due, voided, revoked, or paused.
    */
   state?: string | null;
   /**
@@ -4807,6 +4807,10 @@ export interface InvoiceUpdate {
     */
   netTerms?: number | null;
   address?: InvoiceAddress | null;
+  /**
+    * An alphanumeric code shown per gateway on your site's payment gateways page. Set this code to ensure that a given invoice targets a given gateway.
+    */
+  gatewayCode?: string | null;
 
 }
 
diff --git a/lib/recurly/resources/ExternalSubscription.js b/lib/recurly/resources/ExternalSubscription.js
index f70944ba..3f180190 100644
--- a/lib/recurly/resources/ExternalSubscription.js
+++ b/lib/recurly/resources/ExternalSubscription.js
@@ -26,7 +26,7 @@ const Resource = require('../Resource')
  * @prop {Date} lastPurchased - When a new billing event occurred on the external subscription in conjunction with a recent billing period, reactivation or upgrade/downgrade.
  * @prop {string} object - Object type
  * @prop {number} quantity - An indication of the quantity of a subscribed item's quantity.
- * @prop {string} state - External subscriptions can be active, canceled, expired, or past_due.
+ * @prop {string} state - External subscriptions can be active, canceled, expired, past_due, voided, revoked, or paused.
  * @prop {boolean} test - An indication of whether or not the external subscription was purchased in a sandbox environment.
  * @prop {Date} trialEndsAt - When the external subscription trial period ends in the external platform.
  * @prop {Date} trialStartedAt - When the external subscription trial period started in the external platform.
diff --git a/openapi/api.yaml b/openapi/api.yaml
index 08c63a4d..29d475d6 100644
--- a/openapi/api.yaml
+++ b/openapi/api.yaml
@@ -19877,6 +19877,11 @@ components:
           maximum: 999
         address:
           "$ref": "#/components/schemas/InvoiceAddress"
+        gateway_code:
+          type: string
+          description: An alphanumeric code shown per gateway on your site's payment
+            gateways page. Set this code to ensure that a given invoice targets a
+            given gateway.
     InvoiceMini:
       type: object
       title: Invoice mini details
@@ -24309,8 +24314,8 @@ components:
           minimum: 0
         state:
           type: string
-          description: External subscriptions can be active, canceled, expired, or
-            past_due.
+          description: External subscriptions can be active, canceled, expired, past_due,
+            voided, revoked, or paused.
           default: active
         activated_at:
           type: string
@@ -25626,6 +25631,7 @@ components:
       - wire_transfer
       - braintree_v_zero
       - boleto
+      - cash_app
     CardTypeEnum:
       type: string
       enum:
diff --git a/package-lock.json b/package-lock.json
index cd2fc9fb..53b9265e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "recurly",
-  "version": "4.50.0",
+  "version": "4.51.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "recurly",
-      "version": "4.50.0",
+      "version": "4.51.0",
       "license": "MIT",
       "devDependencies": {
         "@types/node": "^12.11.1",