diff --git a/package.json b/package.json
index 22367b49028330..1726b815537fbe 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,10 @@
   "description": "JavaScript 3D library",
   "main": "build/three.js",
   "module": "build/three.module.js",
+  "exports": {
+    "import": "./build/three.mjs",
+    "default": "./build/three.js"
+  },
   "types": "src/Three.d.ts",
   "repository": {
     "type": "git",
diff --git a/utils/build/rollup.config.js b/utils/build/rollup.config.js
index 2cf00fdb2a6da3..ac7bf7c34af02a 100644
--- a/utils/build/rollup.config.js
+++ b/utils/build/rollup.config.js
@@ -235,5 +235,19 @@ export default [
 				indent: '\t'
 			}
 		]
+	},
+	{
+		input: 'src/Three.js',
+		plugins: [
+			glconstants(),
+			glsl(),
+		],
+		output: [
+			{
+				format: 'esm',
+				file: 'build/three.mjs',
+				indent: '\t'
+			}
+		]
 	}
 ];