diff --git a/wp-admin/includes/taxonomy.php b/wp-admin/includes/taxonomy.php
index 6f6d502711..7765084fa7 100644
--- a/wp-admin/includes/taxonomy.php
+++ b/wp-admin/includes/taxonomy.php
@@ -188,7 +188,7 @@ function wp_insert_category( $catarr, $wp_error = false ) {
 function wp_update_category( $catarr ) {
 	$cat_id = (int) $catarr['cat_ID'];
 
-	if ( isset( $catarr['category_parent'] ) && ( $cat_id == $catarr['category_parent'] ) ) {
+	if ( isset( $catarr['category_parent'] ) && ( $cat_id === (int) $catarr['category_parent'] ) ) {
 		return false;
 	}
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 37a5fc7611..6ef6fc0eab 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-55508';
+$wp_version = '6.3-alpha-55511';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.