diff --git a/application/views/backend/header.php b/application/views/backend/header.php
index 3da3bd88..789e8c10 100755
--- a/application/views/backend/header.php
+++ b/application/views/backend/header.php
@@ -28,6 +28,7 @@
     <script src="<?= asset_url('assets/ext/tippy/tippy-bundle.umd.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/jquery-ui/jquery-ui.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/moment/moment.min.js') ?>"></script>
+    <script src="<?= asset_url('assets/ext/moment/moment-timezone-with-data.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/datejs/date.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/trumbowyg/trumbowyg.min.js') ?>"></script>
     <script src="<?= asset_url('assets/ext/select2/select2.min.js') ?>"></script>