diff --git a/core/lib/Drupal.php b/core/lib/Drupal.php
index 5050dc63572d38d5d267807a9bf900a116e4c0b2..7be881d48b30f72bdda3456f131161c3f82e00e2 100644
--- a/core/lib/Drupal.php
+++ b/core/lib/Drupal.php
@@ -82,7 +82,7 @@ class Drupal {
   /**
    * The current system version.
    */
-  const VERSION = '8.7.0-dev';
+  const VERSION = '8.7.0-alpha1';
 
   /**
    * Core API compatibility.