diff --git a/package.json b/package.json
index fb4557257..db8306ee8 100644
--- a/package.json
+++ b/package.json
@@ -6,12 +6,12 @@
   "bugs": {
     "url": "https://github.com/MetaMask/utils/issues"
   },
-  "sideEffects": false,
   "repository": {
     "type": "git",
     "url": "https://github.com/MetaMask/utils.git"
   },
   "license": "ISC",
+  "sideEffects": false,
   "exports": {
     ".": {
       "import": "./dist/index.mjs",
@@ -20,6 +20,8 @@
     },
     "./package.json": "./package.json"
   },
+  "main": "./dist/index.js",
+  "module": "./dist/index.mjs",
   "types": "./dist/types/index.d.ts",
   "files": [
     "dist"
diff --git a/tsup.config.ts b/tsup.config.ts
index 979f8d01f..618e99217 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -28,7 +28,7 @@ export default defineConfig({
   // Enables shimming of `__dirname` and `import.meta.url`, so that they work
   // in both CommonJS and ESM.
   // https://tsup.egoist.dev/#inject-cjs-and-esm-shims
-  shims: false,
+  shims: true,
 
   // Hide unnecessary logs from the console. Warnings and errors will still be
   // shown.