diff --git a/index-dev.html b/index-dev.html
index c8d7f89f..2de595fd 100644
--- a/index-dev.html
+++ b/index-dev.html
@@ -32,7 +32,7 @@
     <script crossorigin="anonymous" src="https://cdn.jsdelivr.net/npm/react@17/umd/react.development.js"></script>
     <script crossorigin="anonymous" src="https://cdn.jsdelivr.net/npm/react-dom@17/umd/react-dom.development.js"></script>
     <!-- React-Intl for translations -->
-    <script crossorigin="anonymous" src="https://cdn.jsdelivr.net/npm/react-intl@5/react-intl.iife.js"></script>
+    <script crossorigin="anonymous" src="https://cdn.jsdelivr.net/npm/react-intl@5.20.11/react-intl.iife.js"></script>
     <!-- Firebase for push notifications -->
     <script crossorigin="anonymous" src="https://cdn.jsdelivr.net/npm/firebase@8/firebase-app.js"></script>
     <script crossorigin="anonymous" src="https://cdn.jsdelivr.net/npm/firebase@8/firebase-messaging.js"></script>