diff --git a/README.md b/README.md
index 07570f0..6b41191 100644
--- a/README.md
+++ b/README.md
@@ -81,6 +81,7 @@ Table of Contents
     - chartjs-plugin-crosshair v1.2.0 ([https://github.com/abelheinsbroek/chartjs-plugin-crosshair](https://github.com/abelheinsbroek/chartjs-plugin-crosshair))
   - OverlayScrollbars v1.13.3
   - flag-icon-css v4.1.4 ([https://github.com/lipis/flag-icon-css](https://github.com/lipis/flag-icon-css))
+  - Intl.js (uses the v3.111.0 polyfill service to only download if using a browser that doesn't already support the ECMAScript Internationalization API)
 - Platform independent (tested to run on Windows, MacOS and Linux) **NOTE:** Most of the instructions in this guide were written for use with Linux and may need to be modified when using another OS
 - Mobile-friendly
 - Sass support
diff --git a/views/includes/common.pug b/views/includes/common.pug
index 07df85f..db52276 100644
--- a/views/includes/common.pug
+++ b/views/includes/common.pug
@@ -1,3 +1,4 @@
+script(type='text/javascript', src='https://polyfill.io/v3/polyfill.min.js?version=3.111.0&features=Intl')
 script(type='text/javascript', src='https://cdn.jsdelivr.net/npm/luxon@2.1.1/build/global/luxon.min.js')
 script.
   function format_unixtime(unixtime, alt) {