diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29403ae..cfb8217 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## v4.1.8
+* Fixed customer externalId when creating a customer and sending it to RetailCRM
+
 ## v4.1.7
 * Fixed notices in ICML generation and while setting delivery type
 * Fixed incorrect data check before setting payment data
diff --git a/VERSION b/VERSION
index 9edf2a4..a7c00da 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.1.7
+4.1.8
diff --git a/src/upload/catalog/model/extension/retailcrm/order.php b/src/upload/catalog/model/extension/retailcrm/order.php
index f69e8ba..b91c596 100644
--- a/src/upload/catalog/model/extension/retailcrm/order.php
+++ b/src/upload/catalog/model/extension/retailcrm/order.php
@@ -420,6 +420,7 @@ class ModelExtensionRetailcrmOrder extends Model {
             'lastName' => $data['lastname'],
             'email' => $data['email'],
             'createdAt' => $data['date_added'],
+            'externalId' => $data['customer_id'],
             'address' => array(
                 'countryIso' => $data['payment_iso_code_2'],
                 'index' => $data['payment_postcode'],