diff --git a/.yarn/versions/5da63084.yml b/.yarn/versions/5da63084.yml
new file mode 100644
index 00000000..14576c16
--- /dev/null
+++ b/.yarn/versions/5da63084.yml
@@ -0,0 +1,2 @@
+releases:
+  "@fast-check/packaged": minor
diff --git a/packages/packaged/bin/packaged.js b/packages/packaged/bin/packaged.js
index 411414d1..28f808b1 100755
--- a/packages/packaged/bin/packaged.js
+++ b/packages/packaged/bin/packaged.js
@@ -1,31 +1,33 @@
-/* global process, console, require */
-// eslint-disable-next-line @typescript-eslint/no-var-requires
-const { removeNonPublishedFiles } = require('../lib/packaged.js');
+/* global process, console */
+import { removeNonPublishedFiles } from '../lib/packaged.js';
 
-const args = process.argv.slice(2);
-const help = args.includes('--help') || args.includes('-h');
-if (help) {
-  console.log('Usages:');
-  console.log('- packaged');
-  console.log('  Drop any file in the current directory that will not be part of the package');
-  console.log('  if published to npm registry');
-  console.log('- packaged --dry-run');
-  console.log('  No removal, just printing');
-  console.log('- packaged --keep-node-modules');
-  console.log('  Keep root level node_modules if any');
-  return;
-}
-const dryRun = args.includes('--dry-run');
-const keepNodeModules = args.includes('--keep-node-modules');
-removeNonPublishedFiles('.', { dryRun, keepNodeModules }).then((out) => {
-  if (dryRun) {
-    console.log('Those files would have been kept:');
-    for (const k of out.kept) {
-      console.log(`- ${k}`);
-    }
-    console.log('Those files would have been removed:');
-    for (const r of out.removed) {
-      console.log(`- ${r}`);
-    }
+function run(args) {
+  const help = args.includes('--help') || args.includes('-h');
+  if (help) {
+    console.log('Usages:');
+    console.log('- packaged');
+    console.log('  Drop any file in the current directory that will not be part of the package');
+    console.log('  if published to npm registry');
+    console.log('- packaged --dry-run');
+    console.log('  No removal, just printing');
+    console.log('- packaged --keep-node-modules');
+    console.log('  Keep root level node_modules if any');
+    return;
   }
-});
+  const dryRun = args.includes('--dry-run');
+  const keepNodeModules = args.includes('--keep-node-modules');
+  removeNonPublishedFiles('.', { dryRun, keepNodeModules }).then((out) => {
+    if (dryRun) {
+      console.log('Those files would have been kept:');
+      for (const k of out.kept) {
+        console.log(`- ${k}`);
+      }
+      console.log('Those files would have been removed:');
+      for (const r of out.removed) {
+        console.log(`- ${r}`);
+      }
+    }
+  });
+}
+
+run(process.argv.slice(2));
diff --git a/packages/packaged/package.json b/packages/packaged/package.json
index f88e1f1c..770b085e 100644
--- a/packages/packaged/package.json
+++ b/packages/packaged/package.json
@@ -2,7 +2,7 @@
   "name": "@fast-check/packaged",
   "description": "Utility package removing any files that will not be part of the final bundle",
   "version": "0.2.0",
-  "type": "commonjs",
+  "type": "module",
   "main": "lib/packaged.js",
   "types": "lib/packaged.d.ts",
   "bin": "./bin/packaged.js",
@@ -12,11 +12,11 @@
   ],
   "sideEffects": false,
   "scripts": {
-    "build": "yarn build:publish-cjs && yarn build:publish-types",
+    "build": "yarn build:publish-esm && yarn build:publish-types",
     "build-ci": "yarn build",
     "build:publish-types": "tsc -p tsconfig.publish.types.json",
-    "build:publish-cjs": "tsc -p tsconfig.publish.json",
-    "test": "jest --verbose",
+    "build:publish-esm": "tsc -p tsconfig.publish.json --module es2015 --moduleResolution node",
+    "test": "yarn node --experimental-vm-modules $(yarn bin jest) --verbose",
     "typecheck": "tsc --noEmit"
   },
   "repository": {
diff --git a/packages/packaged/test-types/empty.ts b/packages/packaged/test-types/empty.ts
new file mode 100644
index 00000000..a617e52d
--- /dev/null
+++ b/packages/packaged/test-types/empty.ts
@@ -0,0 +1,2 @@
+// Just to avoid empty mv from complaining in CI.
+// Alternatively we could have muted the complaint by passsing some flags to mv but it would have hidden a potentially legit error.
diff --git a/packages/packaged/test-types/main.ts b/packages/packaged/test-types/main.mts
similarity index 100%
rename from packages/packaged/test-types/main.ts
rename to packages/packaged/test-types/main.mts