diff --git a/README.md b/README.md
index 0cbc416..ddf9f22 100644
--- a/README.md
+++ b/README.md
@@ -92,7 +92,7 @@ Table of Contents
     - chartjs-adapter-luxon v1.3.1 ([https://github.com/chartjs/chartjs-adapter-luxon](https://github.com/chartjs/chartjs-adapter-luxon))
   - OverlayScrollbars v2.3.2
   - flag-icons v6.11.1 ([https://github.com/lipis/flag-icons](https://github.com/lipis/flag-icons))
-  - 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)
+  - Intl.js (uses the v4.8.0 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 e827618..3031ea1 100644
--- a/views/includes/common.pug
+++ b/views/includes/common.pug
@@ -1,4 +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://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?version=4.8.0&features=Intl')
 script(type='text/javascript', src='https://cdn.jsdelivr.net/npm/luxon@3.4.3/build/global/luxon.min.js')
 script.
   function format_unixtime(unixtime, alt) {