diff --git a/src/wp-includes/version.php b/src/wp-includes/version.php
index 91543726c9..b557114ce8 100644
--- a/src/wp-includes/version.php
+++ b/src/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-RC2-40868-src';
+$wp_version = '4.9-alpha-40870-src';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.