diff --git a/lib/Product.php b/lib/Product.php
index bd1025b3e..d3d21634c 100644
--- a/lib/Product.php
+++ b/lib/Product.php
@@ -27,6 +27,7 @@
  * @property null|string $caption A short one-line description of the product, meant to be displayable to the customer. Only applicable to products of <code>type=good</code>.
  * @property int $created Time at which the object was created. Measured in seconds since the Unix epoch.
  * @property string[] $deactivate_on An array of connect application identifiers that cannot purchase this product. Only applicable to products of <code>type=good</code>.
+ * @property null|string|\Stripe\Price $default_price The ID of the <a href="https://stripe.com/docs/api/prices">Price</a> object that is the default price for this product.
  * @property null|string $description The product's description, meant to be displayable to the customer. Use this field to optionally store a long form explanation of the product being sold for your own rendering purposes.
  * @property string[] $images A list of up to 8 URLs of images for this product, meant to be displayable to the customer.
  * @property bool $livemode Has the value <code>true</code> if the object exists in live mode or the value <code>false</code> if the object exists in test mode.
diff --git a/lib/Refund.php b/lib/Refund.php
index f8bfae6e4..4c640119f 100644
--- a/lib/Refund.php
+++ b/lib/Refund.php
@@ -21,6 +21,7 @@
  * @property string $description An arbitrary string attached to the object. Often useful for displaying to users. (Available on non-card refunds only)
  * @property string|\Stripe\BalanceTransaction $failure_balance_transaction If the refund failed, this balance transaction describes the adjustment made on your account balance that reverses the initial balance transaction.
  * @property string $failure_reason If the refund failed, the reason for refund failure if known. Possible values are <code>lost_or_stolen_card</code>, <code>expired_or_canceled_card</code>, or <code>unknown</code>.
+ * @property string $instructions_email Email to which refund instructions, if required, are sent to.
  * @property null|\Stripe\StripeObject $metadata Set of <a href="https://stripe.com/docs/api/metadata">key-value pairs</a> that you can attach to an object. This can be useful for storing additional information about the object in a structured format.
  * @property \Stripe\StripeObject $next_action
  * @property null|string|\Stripe\PaymentIntent $payment_intent ID of the PaymentIntent that was refunded.