diff --git a/bumper_en.html b/bumper_en.html
index 1267888..0b4a0dd 100644
--- a/bumper_en.html
+++ b/bumper_en.html
@@ -133,7 +133,7 @@
 
   // Module loading in compilation-free (development) mode will be kicked off once strings are loaded.
   // This is done in load-unbuilt-strings.js
-  window.phet.chipper.loadModules = () => loadURL( 'js/bumper-main.js', 'module' );
+  window.phet.chipper.loadModules = () => loadURL( '../chipper/dist/bumper/js/bumper-main.js', 'module' );
 </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/js/bumperStrings.js b/js/bumperStrings.ts
similarity index 67%
rename from js/bumperStrings.js
rename to js/bumperStrings.ts
index a0bef77..2b34aaa 100644
--- a/js/bumperStrings.js
+++ b/js/bumperStrings.ts
@@ -3,11 +3,17 @@
 /**
  * Auto-generated from modulify, DO NOT manually modify.
  */
-
+/* eslint-disable */
 import getStringModule from '../../chipper/js/getStringModule.js';
 import bumper from './bumper.js';
 
-const bumperStrings = getStringModule( 'BUMPER' );
+type StringsType = {
+  'bumper': {
+    'title': string
+  }
+};
+
+const bumperStrings = getStringModule( 'BUMPER' ) as StringsType;
 
 bumper.register( 'bumperStrings', bumperStrings );