diff --git a/src/phpSpreadsheet/Helper.php b/src/phpSpreadsheet/Helper.php
index 34a5ec9..12f3d5c 100644
--- a/src/phpSpreadsheet/Helper.php
+++ b/src/phpSpreadsheet/Helper.php
@@ -8,7 +8,7 @@
  * PhpSpreadsheet Helper
  * 
  * @author      Nick Tsai <myintaer@gmail.com>
- * @version     1.3.3
+ * @version     1.3.4
  * @filesource 	PhpSpreadsheet <https://github.com/PHPOffice/PhpSpreadsheet>
  * @see         https://github.com/yidas/phpspreadsheet-helper
  * @example