diff --git a/packages/webaudio/package.json b/packages/webaudio/package.json
index dacca26a..74ad470a 100644
--- a/packages/webaudio/package.json
+++ b/packages/webaudio/package.json
@@ -1,12 +1,16 @@
 {
   "name": "@strudel.cycles/webaudio",
-  "version": "0.5.0",
+  "version": "0.6.0",
   "description": "Web Audio helpers for Strudel",
   "main": "index.mjs",
   "type": "module",
   "directories": {
     "example": "examples"
   },
+  "publishConfig": {
+    "main": "dist/index.js",
+    "module": "dist/index.mjs"
+  },
   "scripts": {
     "example": "npx parcel examples/repl.html",
     "build": "vite build",
@@ -31,5 +35,8 @@
   "homepage": "https://github.com/tidalcycles/strudel#readme",
   "dependencies": {
     "@strudel.cycles/core": "workspace:*"
+  },
+  "devDependencies": {
+    "vite": "^3.2.2"
   }
 }
diff --git a/packages/webaudio/vite.config.js b/packages/webaudio/vite.config.js
index 5df3b215..0fc63a6b 100644
--- a/packages/webaudio/vite.config.js
+++ b/packages/webaudio/vite.config.js
@@ -9,7 +9,7 @@ export default defineConfig({
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
       formats: ['es', 'cjs'],
-      fileName: (ext) => `index.${ext}.js`,
+      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' }[ext]),
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 5983f03f..5e6ec646 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -259,8 +259,11 @@ importers:
   packages/webaudio:
     specifiers:
       '@strudel.cycles/core': workspace:*
+      vite: ^3.2.2
     dependencies:
       '@strudel.cycles/core': link:../core
+    devDependencies:
+      vite: 3.2.5
 
   packages/webdirt:
     specifiers: