diff --git a/package.json b/package.json
index 3d844ec0..7a7f03fe 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,9 @@
   "name": "@ubie/ubie-ui",
   "version": "0.0.3",
   "description": "React components for creating Ubie applications.",
-  "types": "dist/index.d.ts",
+  "main": "dist/index.js",
+  "module": "dist/index.mjs",
+  "typings": "dist/index.d.ts",
   "files": [
     "README.md",
     "dist"
diff --git a/tsup.config.ts b/tsup.config.ts
index d77aa977..d3b9be0c 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -5,23 +5,5 @@ export default defineConfig({
   dts: true,
   format: ['cjs', 'esm'],
   entry: ['src', '!src/**/*.spec.*', '!src/**/*.d.ts'],
-  external: ['react'],
   bundle: false,
-  plugins: [
-    {
-      name: 'fix-esm',
-      renderChunk(_, chunk) {
-        if (this.format === 'esm') {
-          // https://github.com/egoist/tsup/issues/953
-          const code = addMjsExtension(chunk.code);
-          return { code };
-        }
-      },
-    },
-  ],
 });
-
-function addMjsExtension(content) {
-  // This regex looks for relative import paths that don't have a file extension
-  return content.replace(/from\s+['"](\.\/|\.\.\/)(?![^'"\s]+?\.\w+['"])([^'"\s]+?)['"];/g, "from '$1$2.mjs';");
-}