diff --git a/includes/mailchimp_ecommerce.admin.inc b/includes/mailchimp_ecommerce.admin.inc
index 6b15e20..761ae7d 100644
--- a/includes/mailchimp_ecommerce.admin.inc
+++ b/includes/mailchimp_ecommerce.admin.inc
@@ -19,6 +19,13 @@ function mailchimp_ecommerce_admin_settings() {
     '#default_value' => variable_get('mailchimp_ecommerce_store_name', ''),
     '#description' => t('The name of your store as it should appear in your MailChimp account.'),
   ];
+  $form['mailchimp_ecommerce_store_domain'] = [
+    '#type' => 'textfield',
+    '#title' => t('Store Domain'),
+    '#required' => TRUE,
+    '#default_value' => variable_get('mailchimp_ecommerce_store_domain', ''),
+    '#description' => t('The domain of your store as it should appear in your MailChimp account. Use absolute URL without protocol or trailing slash.'),
+  ];
 
   $mailchimp_lists = mailchimp_get_lists();
   $list_options = [
@@ -100,6 +107,7 @@ function mailchimp_ecommerce_admin_settings_submit($form, &$form_state) {
         'list_id' => isset($form_state['values']['mailchimp_ecommerce_list_id']) ? $form_state['values']['mailchimp_ecommerce_list_id'] : variable_get('mailchimp_ecommerce_list_id'),
         'name' => $form_state['values']['mailchimp_ecommerce_store_name'],
         'currency_code' => $currency,
+        'domain' => $form_state['values']['mailchimp_ecommerce_store_domain'],
       ];
 
       mailchimp_ecommerce_add_store($store_id, $store);
@@ -107,7 +115,8 @@ function mailchimp_ecommerce_admin_settings_submit($form, &$form_state) {
     else {
       mailchimp_ecommerce_update_store($store_id,
         $form_state['values']['mailchimp_ecommerce_store_name'],
-        $currency);
+        $currency,
+        array('domain' => $form_state['values']['mailchimp_ecommerce_store_domain']));
     }
   }
 
diff --git a/mailchimp_ecommerce.install b/mailchimp_ecommerce.install
index 6c4fceb..662502a 100644
--- a/mailchimp_ecommerce.install
+++ b/mailchimp_ecommerce.install
@@ -13,6 +13,7 @@ function mailchimp_ecommerce_uninstall() {
   variable_del('mailchimp_ecommerce_currency');
   variable_del('mailchimp_ecommerce_list_id');
   variable_del('mailchimp_ecommerce_store_name');
+  variable_del('mailchimp_ecommerce_store_domain');
 }
 
 /**
diff --git a/mailchimp_ecommerce.module b/mailchimp_ecommerce.module
index 7fdf004..c24a1e1 100644
--- a/mailchimp_ecommerce.module
+++ b/mailchimp_ecommerce.module
@@ -113,11 +113,11 @@ function mailchimp_ecommerce_add_store($store_id, $store) {
  * @param string $currency_code
  *   The three-letter ISO 4217 code.
  */
-function mailchimp_ecommerce_update_store($store_id, $name, $currency_code) {
+function mailchimp_ecommerce_update_store($store_id, $name, $currency_code, $parameters = array()) {
   try {
     /* @var \Mailchimp\MailchimpEcommerce $mc_ecommerce */
     $mc_ecommerce = mailchimp_get_api_object('MailchimpEcommerce');
-    $mc_ecommerce->updateStore($store_id, $name, $currency_code);
+    $mc_ecommerce->updateStore($store_id, $name, $currency_code, $parameters);
   }
   catch (Exception $e) {
     mailchimp_ecommerce_log_error_message('Unable to update a store: ' . $e->getMessage());
--