diff --git a/.gitignore b/.gitignore
index 5f6c423..49cf5b6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 dist
 node_modules
-tmp
\ No newline at end of file
+tmp
+dbDir
diff --git a/package.json b/package.json
index 3bebde0..07bc866 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "url": "https://github.com/sponsors/dmonad"
   },
   "scripts": {
-    "start": "node ./src/server.cjs",
+    "start": "node ./src/server.js",
     "dist": "rm -rf dist && rollup -c && tsc",
     "lint": "standard && tsc",
     "test": "npm run lint",
diff --git a/src/utils.js b/src/utils.js
index 9f27605..6ecea13 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -30,7 +30,7 @@ let persistence = null
 if (typeof persistenceDir === 'string') {
   console.info('Persisting documents to "' + persistenceDir + '"')
   // @ts-ignore
-  const LeveldbPersistence = require('y-leveldb').LeveldbPersistence
+  const LeveldbPersistence = (await import('y-leveldb')).LeveldbPersistence
   const ldb = new LeveldbPersistence(persistenceDir)
   persistence = {
     provider: ldb,