diff --git a/src/wp-includes/version.php b/src/wp-includes/version.php
index 6e6354d152..c22cc88fb1 100644
--- a/src/wp-includes/version.php
+++ b/src/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-beta3-48551-src';
+$wp_version = '5.5-beta4-src';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.