diff --git a/core/lib/Drupal.php b/core/lib/Drupal.php
index 515f0d088b6c81ec6fd3e0330b88ff4a3e5e7c49..d12f1ac9446af37a2e203168bcec6ac5ad700047 100644
--- a/core/lib/Drupal.php
+++ b/core/lib/Drupal.php
@@ -81,7 +81,7 @@ class Drupal {
   /**
    * The current system version.
    */
-  const VERSION = '8.4.3';
+  const VERSION = '8.4.4-dev';
 
   /**
    * Core API compatibility.