diff --git a/core/lib/Drupal.php b/core/lib/Drupal.php
index 86520281e6627046a6bd24ac5f995a3bbc7c6381..39a39aaafe42cb92c5581ac7bb2f6d65f6621c22 100644
--- a/core/lib/Drupal.php
+++ b/core/lib/Drupal.php
@@ -81,7 +81,7 @@ class Drupal {
   /**
    * The current system version.
    */
-  const VERSION = '8.3.8';
+  const VERSION = '8.3.9';
 
   /**
    * Core API compatibility.