diff --git a/src/wp-includes/version.php b/src/wp-includes/version.php
index a23b49bfbf..04c7785ca0 100644
--- a/src/wp-includes/version.php
+++ b/src/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.1-alpha-43677-src';
+$wp_version = '5.1-beta1-src';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.