diff --git a/metadata.php b/metadata.php
index 4c500ad90..d875fe6d1 100644
--- a/metadata.php
+++ b/metadata.php
@@ -58,7 +58,7 @@
         'en' => 'Use of the online payment service from PayPal. Documentation: <a href="https://docs.oxid-esales.com/modules/paypal-checkout/en/latest/" target="_blank">PayPal Checkout</a>'
     ],
     'thumbnail' => 'out/img/paypal.png',
-    'version' => '1.3.9',
+    'version' => '1.3.9-rc.1',
     'author' => 'OXID eSales AG',
     'url' => 'https://www.oxid-esales.com',
     'email' => 'info@oxid-esales.com',