diff --git a/treemap/app/index.html b/treemap/app/index.html
index d53ba00f0f16..7ec3e3cdaade 100644
--- a/treemap/app/index.html
+++ b/treemap/app/index.html
@@ -83,8 +83,6 @@ <h1 class="treemap-placeholder__heading">Lighthouse Treemap</h1>
     </div>
   </main>
 
-  <script src="https://www.gstatic.com/firebasejs/4.1.2/firebase-app.js"></script>
-  <script src="https://www.gstatic.com/firebasejs/4.1.2/firebase-auth.js"></script>
   <script src="src/bundled.js"></script>
 
   <script>
diff --git a/treemap/types/treemap.d.ts b/treemap/types/treemap.d.ts
index b870e61b6dac..f1739c66937c 100644
--- a/treemap/types/treemap.d.ts
+++ b/treemap/types/treemap.d.ts
@@ -1,5 +1,4 @@
 import {Logger as _Logger} from '../../report/renderer/logger.js';
-import {FirebaseNamespace} from '@firebase/app-types';
 import Treemap_ from '../../types/lhr/treemap';
 import * as Settings from '../../types/lhr/settings';
 import 'google.analytics';
@@ -44,7 +43,6 @@ declare global {
     sort(data: any): void;
   };
   var logger: _Logger;
-  var firebase: Required<FirebaseNamespace>;
   var idbKeyval: typeof import('idb-keyval');
   // `strings` is generated in build/build-treemap.js
   var strings: Record<Settings.Locale, typeof TreemapUtil['UIStrings']>;