diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index e1793b8..0566fef 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -46,7 +46,7 @@ jobs:
       - name: Rename build artifact
         run: |
           mkdir js/modules
-          mv dist/web/index.js js/modules/esptool.jsm
+          mv dist/web/index.js js/modules/esptool.js
       - name: Setup Pages
         uses: actions/configure-pages@v2
       - name: Upload artifact
diff --git a/index.html b/index.html
index fbd422c..17699d0 100644
--- a/index.html
+++ b/index.html
@@ -39,7 +39,7 @@
         // In development we import locally.
         window.location.hostname === "localhost"
           ? "/dist/web/index.js"
-          : "js/modules/esptool.jsm"
+          : "./js/modules/esptool.js"
       );
     </script>
     <script src="js/script.js" module defer></script>