diff --git a/core/lib/Drupal.php b/core/lib/Drupal.php
index 4d27ec0dc77ebe31d12a8c1e9d238898d4d4a48d..c220178998bf43c0f19756874063cdf48fb1fce6 100644
--- a/core/lib/Drupal.php
+++ b/core/lib/Drupal.php
@@ -82,7 +82,7 @@ class Drupal {
   /**
    * The current system version.
    */
-  const VERSION = '8.6.18';
+  const VERSION = '8.6.19-dev';
 
   /**
    * Core API compatibility.