diff --git a/package.json b/package.json
index 068a57bc..22f6a9d8 100755
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
     "version": "0.1.0",
     "private": true,
     "homepage": "https://udlbook.github.io/udlbook",
+    "type": "module",
     "scripts": {
         "dev": "vite",
         "build": "vite build",