diff --git a/OPENAPI_VERSION b/OPENAPI_VERSION
index b87b42e0c..76d4091fa 100644
--- a/OPENAPI_VERSION
+++ b/OPENAPI_VERSION
@@ -1 +1 @@
-v217
\ No newline at end of file
+v218
\ No newline at end of file
diff --git a/init.php b/init.php
index 23cc5f941..1a2784ae3 100644
--- a/init.php
+++ b/init.php
@@ -165,6 +165,7 @@
 require __DIR__ . '/lib/SubscriptionItem.php';
 require __DIR__ . '/lib/SubscriptionSchedule.php';
 require __DIR__ . '/lib/Tax/Calculation.php';
+require __DIR__ . '/lib/Tax/Registration.php';
 require __DIR__ . '/lib/Tax/Transaction.php';
 require __DIR__ . '/lib/TaxCode.php';
 require __DIR__ . '/lib/TaxId.php';
@@ -260,6 +261,7 @@
 require __DIR__ . '/lib/Service/SubscriptionItemService.php';
 require __DIR__ . '/lib/Service/SubscriptionScheduleService.php';
 require __DIR__ . '/lib/Service/Tax/CalculationService.php';
+require __DIR__ . '/lib/Service/Tax/RegistrationService.php';
 require __DIR__ . '/lib/Service/Tax/TransactionService.php';
 require __DIR__ . '/lib/Service/TaxCodeService.php';
 require __DIR__ . '/lib/Service/TaxRateService.php';
diff --git a/lib/Event.php b/lib/Event.php
index 2807b37b6..54aa2a2d7 100644
--- a/lib/Event.php
+++ b/lib/Event.php
@@ -197,9 +197,12 @@ class Event extends ApiResource
     const PROMOTION_CODE_CREATED = 'promotion_code.created';
     const PROMOTION_CODE_UPDATED = 'promotion_code.updated';
     const QUOTE_ACCEPTED = 'quote.accepted';
+    const QUOTE_ACCEPTING = 'quote.accepting';
     const QUOTE_CANCELED = 'quote.canceled';
     const QUOTE_CREATED = 'quote.created';
     const QUOTE_FINALIZED = 'quote.finalized';
+    const QUOTE_REESTIMATED = 'quote.reestimated';
+    const QUOTE_STALE = 'quote.stale';
     const RADAR_EARLY_FRAUD_WARNING_CREATED = 'radar.early_fraud_warning.created';
     const RADAR_EARLY_FRAUD_WARNING_UPDATED = 'radar.early_fraud_warning.updated';
     const RECIPIENT_CREATED = 'recipient.created';
diff --git a/lib/Quote.php b/lib/Quote.php
index 868f7eecd..667ba37e3 100644
--- a/lib/Quote.php
+++ b/lib/Quote.php
@@ -130,7 +130,7 @@ public function cancel($params = null, $opts = null)
      */
     public function draftQuote($params = null, $opts = null)
     {
-        $url = $this->instanceUrl() . '/draft';
+        $url = $this->instanceUrl() . '/mark_draft';
         list($response, $opts) = $this->_request('post', $url, $params, $opts);
         $this->refreshFrom($response, $opts);
 
diff --git a/lib/Service/QuoteService.php b/lib/Service/QuoteService.php
index 8158dce3d..1cfb457d3 100644
--- a/lib/Service/QuoteService.php
+++ b/lib/Service/QuoteService.php
@@ -139,7 +139,7 @@ public function create($params = null, $opts = null)
      */
     public function draftQuote($id, $params = null, $opts = null)
     {
-        return $this->request('post', $this->buildPath('/v1/quotes/%s/draft', $id), $params, $opts);
+        return $this->request('post', $this->buildPath('/v1/quotes/%s/mark_draft', $id), $params, $opts);
     }
 
     /**
diff --git a/lib/Service/Tax/RegistrationService.php b/lib/Service/Tax/RegistrationService.php
new file mode 100644
index 000000000..99481020a
--- /dev/null
+++ b/lib/Service/Tax/RegistrationService.php
@@ -0,0 +1,57 @@
+<?php
+
+// File generated from our OpenAPI spec
+
+namespace Stripe\Service\Tax;
+
+class RegistrationService extends \Stripe\Service\AbstractService
+{
+    /**
+     * Returns a list of Tax <code>Registration</code> objects.
+     *
+     * @param null|array $params
+     * @param null|array|\Stripe\Util\RequestOptions $opts
+     *
+     * @throws \Stripe\Exception\ApiErrorException if the request fails
+     *
+     * @return \Stripe\Collection<\Stripe\Tax\Registration>
+     */
+    public function all($params = null, $opts = null)
+    {
+        return $this->requestCollection('get', '/v1/tax/registrations', $params, $opts);
+    }
+
+    /**
+     * Creates a new Tax <code>Registration</code> object.
+     *
+     * @param null|array $params
+     * @param null|array|\Stripe\Util\RequestOptions $opts
+     *
+     * @throws \Stripe\Exception\ApiErrorException if the request fails
+     *
+     * @return \Stripe\Tax\Registration
+     */
+    public function create($params = null, $opts = null)
+    {
+        return $this->request('post', '/v1/tax/registrations', $params, $opts);
+    }
+
+    /**
+     * Updates an existing Tax <code>Registration</code> object.
+     *
+     * A registration cannot be deleted after it has been created. If you wish to end a
+     * registration you may do so by setting <code>expires_at</code>.
+     *
+     * @param string $id
+     * @param null|array $params
+     * @param null|array|\Stripe\Util\RequestOptions $opts
+     *
+     * @throws \Stripe\Exception\ApiErrorException if the request fails
+     *
+     * @return \Stripe\Tax\Registration
+     */
+    public function update($id, $params = null, $opts = null)
+    {
+        return $this->request('post', $this->buildPath('/v1/tax/registrations/%s', $id), $params, $opts);
+    }
+}
diff --git a/lib/Service/Tax/TaxServiceFactory.php b/lib/Service/Tax/TaxServiceFactory.php
index 6f645a17d..09f85ee5b 100644
--- a/lib/Service/Tax/TaxServiceFactory.php
+++ b/lib/Service/Tax/TaxServiceFactory.php
@@ -8,6 +8,7 @@
  * Service factory class for API resources in the Tax namespace.
  *
  * @property CalculationService $calculations
+ * @property RegistrationService $registrations
  * @property TransactionService $transactions
  */
 class TaxServiceFactory extends \Stripe\Service\AbstractServiceFactory
@@ -17,6 +18,7 @@ class TaxServiceFactory extends \Stripe\Service\AbstractServiceFactory
      */
     private static $classMap = [
         'calculations' => CalculationService::class,
+        'registrations' => RegistrationService::class,
         'transactions' => TransactionService::class,
     ];
 
diff --git a/lib/Tax/Registration.php b/lib/Tax/Registration.php
new file mode 100644
index 000000000..3376895f8
--- /dev/null
+++ b/lib/Tax/Registration.php
@@ -0,0 +1,45 @@
+<?php
+
+// File generated from our OpenAPI spec
+
+namespace Stripe\Tax;
+
+/**
+ * A Tax <code>Registration</code> lets us know that your business is registered to
+ * collect tax on payments within a region, enabling you to <a
+ * href="https://stripe.com/docs/tax">automatically collect tax</a>.
+ *
+ * Stripe will not register on your behalf with the relevant authorities when you
+ * create a Tax <code>Registration</code> object. For more information on how to
+ * register to collect tax, see <a
+ * href="https://stripe.com/docs/tax/registering">our guide</a>.
+ *
+ * @property string $id Unique identifier for the object.
+ * @property string $object String representing the object's type. Objects of the same type share the same value.
+ * @property int $active_from Time at which the registration becomes active. Measured in seconds since the Unix epoch.
+ * @property string $country Two-letter country code (<a href="https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2">ISO 3166-1 alpha-2</a>).
+ * @property int $created Time at which the object was created. Measured in seconds since the Unix epoch.
+ * @property null|int $expires_at If set, the registration stops being active at this time. If not set, the registration will be active indefinitely. Measured in seconds since the Unix epoch.
+ * @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.
+ * @property null|string $state State, county, province, or region.
+ * @property string $status The status of the registration. This field is present for convenience and can be deduced from <code>active_from</code> and <code>expires_at</code>.
+ * @property string $type The type of the registration. See <a href="https://stripe.com/docs/tax/registering">our guide</a> for more information about registration types.
+ */
+class Registration extends \Stripe\ApiResource
+{
+    const OBJECT_NAME = 'tax.registration';
+
+    use \Stripe\ApiOperations\All;
+    use \Stripe\ApiOperations\Create;
+    use \Stripe\ApiOperations\Update;
+
+    const STATUS_ACTIVE = 'active';
+    const STATUS_EXPIRED = 'expired';
+    const STATUS_SCHEDULED = 'scheduled';
+
+    const TYPE_DOMESTIC_SMALL_SELLER = 'domestic_small_seller';
+    const TYPE_SIMPLIFIED = 'simplified';
+    const TYPE_STANDARD = 'standard';
+    const TYPE_VAT_OSS_NON_UNION = 'vat_oss_non_union';
+    const TYPE_VAT_OSS_UNION = 'vat_oss_union';
+}
diff --git a/lib/Util/ObjectTypes.php b/lib/Util/ObjectTypes.php
index 9bda05580..7741a5102 100644
--- a/lib/Util/ObjectTypes.php
+++ b/lib/Util/ObjectTypes.php
@@ -97,6 +97,7 @@ class ObjectTypes
         \Stripe\SubscriptionItem::OBJECT_NAME => \Stripe\SubscriptionItem::class,
         \Stripe\SubscriptionSchedule::OBJECT_NAME => \Stripe\SubscriptionSchedule::class,
         \Stripe\Tax\Calculation::OBJECT_NAME => \Stripe\Tax\Calculation::class,
+        \Stripe\Tax\Registration::OBJECT_NAME => \Stripe\Tax\Registration::class,
         \Stripe\Tax\Transaction::OBJECT_NAME => \Stripe\Tax\Transaction::class,
         \Stripe\TaxCode::OBJECT_NAME => \Stripe\TaxCode::class,
         \Stripe\TaxId::OBJECT_NAME => \Stripe\TaxId::class,