diff --git a/manual-emulator-testing/public/index.html b/manual-emulator-testing/public/index.html
index 66fe24d1..7e3edb77 100644
--- a/manual-emulator-testing/public/index.html
+++ b/manual-emulator-testing/public/index.html
@@ -23,9 +23,9 @@
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/water.css@2/out/light.min.css">
 
     <!-- Firebase SDKs -->
-    <script src="https://www.gstatic.com/firebasejs/9.1.0/firebase-app-compat.js"></script>
-    <script src="https://www.gstatic.com/firebasejs/9.1.0/firebase-auth-compat.js"></script>
-    <script src="https://www.gstatic.com/firebasejs/9.1.0/firebase-firestore-compat.js"></script>
+    <script src="https://www.gstatic.com/firebasejs/12.9.0/firebase-app-compat.js"></script>
+    <script src="https://www.gstatic.com/firebasejs/12.9.0/firebase-auth-compat.js"></script>
+    <script src="https://www.gstatic.com/firebasejs/12.9.0/firebase-firestore-compat.js"></script>
   </head>
 
   <body>
