diff --git a/package.json b/package.json
index 4b2d219..b9f3161 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,15 @@
   "main": "dist/sourcemap-codec.umd.js",
   "module": "dist/sourcemap-codec.es.js",
   "types": "dist/types/sourcemap-codec.d.ts",
+  "exports": {
+    ".": {
+      "browser": "./dist/sourcemap-codec.umd.js",
+      "import": "./dist/sourcemap-codec.mjs",
+      "require": "./dist/sourcemap-codec.umd.js"
+    },
+    "./package.json": "./package.json",
+    "./": "./"
+  },
   "scripts": {
     "test": "mocha",
     "build": "rm -rf dist && rollup -c && tsc",
@@ -30,7 +39,6 @@
     "url": "https://github.com/Rich-Harris/sourcemap-codec/issues"
   },
   "homepage": "https://github.com/Rich-Harris/sourcemap-codec",
-  "dependencies": {},
   "devDependencies": {
     "codecov.io": "^0.1.6",
     "console-group": "^0.3.3",
diff --git a/rollup.config.js b/rollup.config.js
index d7a5f72..10aa2ad 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -21,5 +21,10 @@ export default {
 		file: pkg.module,
 		format: 'es',
 		sourcemap: true
+	},
+	{
+		file: pkg.exports['.'].import,
+		format: 'es',
+		sourcemap: true
 	}]
 };