diff --git a/wp-includes/ms-site.php b/wp-includes/ms-site.php
index d4f9a5f9d0..61b81185cc 100644
--- a/wp-includes/ms-site.php
+++ b/wp-includes/ms-site.php
@@ -69,9 +69,11 @@ function wp_insert_site( array $data ) {
 		return new WP_Error( 'db_insert_error', __( 'Could not insert site into the database.' ), $wpdb->last_error );
 	}
 
-	clean_blog_cache( $wpdb->insert_id );
+	$site_id = (int) $wpdb->insert_id;
 
-	$new_site = get_site( $wpdb->insert_id );
+	clean_blog_cache( $site_id );
+
+	$new_site = get_site( $site_id );
 
 	if ( ! $new_site ) {
 		return new WP_Error( 'get_site_error', __( 'Could not retrieve site data.' ) );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 08dee928b9..fdb3280f0c 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47930';
+$wp_version = '5.5-alpha-47932';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.