diff --git a/vanilla-js/index.html b/vanilla-js/index.html
index 3446067d..f6f97923 100644
--- a/vanilla-js/index.html
+++ b/vanilla-js/index.html
@@ -349,10 +349,10 @@ <h2 id="my-mdc-dialog-label" class="mdc-dialog__header__title">
   </aside>
 </div>
 
-<script src="/__/firebase/9.22.1/firebase-app-compat.js"></script>
-<script src="/__/firebase/9.22.1/firebase-auth-compat.js"></script>
-<script src="/__/firebase/9.22.1/firebase-firestore-compat.js"></script>
-<script src="/__/firebase/9.22.1/firebase-app-check-compat.js"></script>
+<script src="/__/firebase/11.1.0/firebase-app-compat.js"></script>
+<script src="/__/firebase/11.1.0/firebase-auth-compat.js"></script>
+<script src="/__/firebase/11.1.0/firebase-firestore-compat.js"></script>
+<script src="/__/firebase/11.1.0/firebase-app-check-compat.js"></script>
 <script src="/__/firebase/init.js"></script>
 
 <script src="//unpkg.com/navigo@6"></script>