diff --git a/openapi/api.yaml b/openapi/api.yaml
index e606589..bcc620f 100644
--- a/openapi/api.yaml
+++ b/openapi/api.yaml
@@ -23606,6 +23606,13 @@ components:
             subscription.
           items:
             "$ref": "#/components/schemas/SubscriptionRampIntervalResponse"
+        next_bill_date:
+          type: string
+          format: date-time
+          title: Next bill date
+          description: If present, this sets the date the subscription's next billing
+            period will start (`current_period_ends_at`). When combined with proration_settings,
+            proration calculation should occur, only supported when timeframe is now.
     SubscriptionChangeBillingInfo:
       type: object
       description: Accept nested attributes for three_d_secure_action_result_token_id
@@ -23766,6 +23773,13 @@ components:
             "$ref": "#/components/schemas/SubscriptionRampInterval"
         proration_settings:
           "$ref": "#/components/schemas/ProrationSettings"
+        next_bill_date:
+          type: string
+          format: date-time
+          title: Next bill date
+          description: If present, this sets the date the subscription's next billing
+            period will start (`current_period_ends_at`). When combined with proration_settings,
+            proration calculation should occur, only supported when timeframe is now.
     SubscriptionChangeShippingCreate:
       type: object
       title: Shipping details that will be changed on a subscription
diff --git a/src/main/java/com/recurly/v3/requests/SubscriptionChangeCreate.java b/src/main/java/com/recurly/v3/requests/SubscriptionChangeCreate.java
index deec1c1..a3e1b04 100644
--- a/src/main/java/com/recurly/v3/requests/SubscriptionChangeCreate.java
+++ b/src/main/java/com/recurly/v3/requests/SubscriptionChangeCreate.java
@@ -12,6 +12,7 @@
 import com.recurly.v3.resources.*;
 import java.math.BigDecimal;
 import java.util.List;
+import org.joda.time.DateTime;
 
 public class SubscriptionChangeCreate extends Request {
 
@@ -110,6 +111,15 @@ public class SubscriptionChangeCreate extends Request {
   @Expose
   private Constants.NetTermsType netTermsType;
 
+  /**
+   * If present, this sets the date the subscription's next billing period will start
+   * (`current_period_ends_at`). When combined with proration_settings, proration calculation should
+   * occur, only supported when timeframe is now.
+   */
+  @SerializedName("next_bill_date")
+  @Expose
+  private DateTime nextBillDate;
+
   /**
    * If you want to change to a new plan, you can provide the plan's code or id. If both are
    * provided the `plan_id` will be used.
@@ -390,6 +400,24 @@ public void setNetTermsType(final Constants.NetTermsType netTermsType) {
     this.netTermsType = netTermsType;
   }
 
+  /**
+   * If present, this sets the date the subscription's next billing period will start
+   * (`current_period_ends_at`). When combined with proration_settings, proration calculation should
+   * occur, only supported when timeframe is now.
+   */
+  public DateTime getNextBillDate() {
+    return this.nextBillDate;
+  }
+
+  /**
+   * @param nextBillDate If present, this sets the date the subscription's next billing period will
+   *     start (`current_period_ends_at`). When combined with proration_settings, proration
+   *     calculation should occur, only supported when timeframe is now.
+   */
+  public void setNextBillDate(final DateTime nextBillDate) {
+    this.nextBillDate = nextBillDate;
+  }
+
   /**
    * If you want to change to a new plan, you can provide the plan's code or id. If both are
    * provided the `plan_id` will be used.
diff --git a/src/main/java/com/recurly/v3/resources/SubscriptionChange.java b/src/main/java/com/recurly/v3/resources/SubscriptionChange.java
index eab1d8b..aac6687 100644
--- a/src/main/java/com/recurly/v3/resources/SubscriptionChange.java
+++ b/src/main/java/com/recurly/v3/resources/SubscriptionChange.java
@@ -69,6 +69,15 @@ public class SubscriptionChange extends Resource {
   @Expose
   private InvoiceCollection invoiceCollection;
 
+  /**
+   * If present, this sets the date the subscription's next billing period will start
+   * (`current_period_ends_at`). When combined with proration_settings, proration calculation should
+   * occur, only supported when timeframe is now.
+   */
+  @SerializedName("next_bill_date")
+  @Expose
+  private DateTime nextBillDate;
+
   /** Object type */
   @SerializedName("object")
   @Expose
@@ -227,6 +236,24 @@ public void setInvoiceCollection(final InvoiceCollection invoiceCollection) {
     this.invoiceCollection = invoiceCollection;
   }
 
+  /**
+   * If present, this sets the date the subscription's next billing period will start
+   * (`current_period_ends_at`). When combined with proration_settings, proration calculation should
+   * occur, only supported when timeframe is now.
+   */
+  public DateTime getNextBillDate() {
+    return this.nextBillDate;
+  }
+
+  /**
+   * @param nextBillDate If present, this sets the date the subscription's next billing period will
+   *     start (`current_period_ends_at`). When combined with proration_settings, proration
+   *     calculation should occur, only supported when timeframe is now.
+   */
+  public void setNextBillDate(final DateTime nextBillDate) {
+    this.nextBillDate = nextBillDate;
+  }
+
   /** Object type */
   public String getObject() {
     return this.object;