diff --git a/composer.json b/composer.json
index 8dc0dfb..1ec63c9 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "ebizmarts/mailchimp-lib",
   "type": "library",
-  "version": "3.0.9",
+  "version": "3.0.10",
   "description": "API client library for the MailChimp",
   "keywords": ["email", "api","mailchimp"],
   "homepage": "https://github.com/ebizmarts/mailchimp-lib",
diff --git a/src/Mailchimp/EcommerceStores.php b/src/Mailchimp/EcommerceStores.php
index 4963b69..ff3221a 100644
--- a/src/Mailchimp/EcommerceStores.php
+++ b/src/Mailchimp/EcommerceStores.php
@@ -30,7 +30,7 @@ class Mailchimp_EcommerceStore  extends Mailchimp_Abstract
      * @throws Mailchimp_HttpError
      */
     public function add($id, $listId, $name, $currencyCode, $platform = null, $domain = null, $emailAddress = null, $moneyFormat = null,
-                        $primaryLocale=null, $timezone = null,$phone=null,$address=null)
+                        $primaryLocale=null, $timezone = null,$phone=null,$address=null,$is_sync=null)
     {
         $_params = array('id'=>$id,'list_id'=>$listId,'name'=>$name,'currency_code'=>$currencyCode);
         if($platform) $_params['platform'] = $platform;
@@ -86,7 +86,7 @@ public function get($id=null,$fields=null,$excludeFields=null,$count=null,$offse
      * @throws Mailchimp_HttpError
      */
     public function edit($storeId,$platform = null, $domain = null, $name = null ,$emailAddress = null,$currencyCode, $moneyFormat = null,
-                         $primaryLocale=null, $timezone = null,$phone=null,$address=null)
+                         $primaryLocale=null, $timezone = null,$phone=null,$address=null, $is_sync=null)
     {
         $_params=array();
         if($platform) $_params['platform'] = $platform;
@@ -99,6 +99,7 @@ public function edit($storeId,$platform = null, $domain = null, $name = null ,$e
         if($timezone) $_params['timezone'] = $timezone;
         if($phone) $_params['phone'] = $phone;
         if($address)  $_params['address'] = $address;
+        if($is_sync) $_params['is_syncing'] = $is_sync;
         return $this->master->call('ecommerce/stores/'.$storeId, $_params, Mailchimp::PATCH);
     }