diff --git a/manual-emulator-testing/public/index.html b/manual-emulator-testing/public/index.html
index f0a5621d..802ceac2 100644
--- a/manual-emulator-testing/public/index.html
+++ b/manual-emulator-testing/public/index.html
@@ -26,9 +26,9 @@
     />
 
     <!-- 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/12.16.0/firebase-app-compat.js"></script>
+    <script src="https://www.gstatic.com/firebasejs/12.16.0/firebase-auth-compat.js"></script>
+    <script src="https://www.gstatic.com/firebasejs/12.16.0/firebase-firestore-compat.js"></script>
   </head>
 
   <body>
