diff --git a/wp-includes/post.php b/wp-includes/post.php
index ba551fd99a..c411dcc371 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -6135,8 +6135,8 @@ function is_local_attachment( $url ) {
  * @see wp_insert_post()
  *
  * @param string|array $args             Arguments for inserting an attachment.
- * @param string|false $file             Optional. Filename.
- * @param int          $parent_post_id   Optional. Parent post ID.
+ * @param string|false $file             Optional. Filename. Default false.
+ * @param int          $parent_post_id   Optional. Parent post ID. Default 0.
  * @param bool         $wp_error         Optional. Whether to return a WP_Error on failure. Default false.
  * @param bool         $fire_after_hooks Optional. Whether to fire the after insert hooks. Default true.
  * @return int|WP_Error The attachment ID on success. The value 0 or WP_Error on failure.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7aac743821..8f59d4d668 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-55616';
+$wp_version = '6.3-alpha-55617';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.