diff --git a/.yarn/versions/fdead730.yml b/.yarn/versions/fdead730.yml
new file mode 100644
index 00000000..239f4777
--- /dev/null
+++ b/.yarn/versions/fdead730.yml
@@ -0,0 +1,2 @@
+releases:
+  "@fast-check/worker": patch
diff --git a/packages/worker/package.json b/packages/worker/package.json
index b997f0a6..666ffdf0 100644
--- a/packages/worker/package.json
+++ b/packages/worker/package.json
@@ -25,6 +25,9 @@
     "build:publish-cjs": "tsc -p tsconfig.publish.json",
     "build:publish-esm": "tsc -p tsconfig.publish.json --module es2015 --moduleResolution node --outDir lib/esm && cp package.esm-template.json lib/esm/package.json",
     "test": "jest",
+    "test-bundle:cjs": "node test-bundle/main.cjs",
+    "test-bundle:mjs": "node test-bundle/main.mjs",
+    "test-bundle": "yarn test-bundle:cjs && yarn test-bundle:mjs",
     "typecheck": "tsc --noEmit"
   },
   "repository": {
diff --git a/packages/worker/src/internals/SharedTypes.ts b/packages/worker/src/internals/SharedTypes.ts
index 06c4c151..733f816b 100644
--- a/packages/worker/src/internals/SharedTypes.ts
+++ b/packages/worker/src/internals/SharedTypes.ts
@@ -1,5 +1,5 @@
 import type { Arbitrary, IAsyncPropertyWithHooks } from 'fast-check';
-import { type PoolToWorkerMessage, type WorkerToPoolMessage } from './worker-pool/BasicPool';
+import { type PoolToWorkerMessage, type WorkerToPoolMessage } from './worker-pool/BasicPool.js';
 
 export type PropertyArbitraries<Ts extends unknown[]> = {
   [K in keyof Ts]: Arbitrary<Ts[K]>;
diff --git a/packages/worker/src/internals/worker-pool/WorkerPool.ts b/packages/worker/src/internals/worker-pool/WorkerPool.ts
index bdbbbafc..5c47c4fd 100644
--- a/packages/worker/src/internals/worker-pool/WorkerPool.ts
+++ b/packages/worker/src/internals/worker-pool/WorkerPool.ts
@@ -1,4 +1,4 @@
-import { BasicPool, OnErrorCallback, OnSuccessCallback } from './BasicPool';
+import { BasicPool, OnErrorCallback, OnSuccessCallback } from './BasicPool.js';
 
 /**
  * Advanced pool for workers
diff --git a/packages/worker/test-bundle/main.cjs b/packages/worker/test-bundle/main.cjs
new file mode 100644
index 00000000..ab823372
--- /dev/null
+++ b/packages/worker/test-bundle/main.cjs
@@ -0,0 +1,6 @@
+const { pathToFileURL } = require('node:url');
+const { constant } = require('fast-check');
+const { propertyFor, assert } = require('@fast-check/worker');
+
+const property = propertyFor(pathToFileURL(__filename));
+assert(property(constant(null), (data) => Object.is(data, null)));
diff --git a/packages/worker/test-bundle/main.mjs b/packages/worker/test-bundle/main.mjs
new file mode 100644
index 00000000..b126dba4
--- /dev/null
+++ b/packages/worker/test-bundle/main.mjs
@@ -0,0 +1,5 @@
+import { constant } from 'fast-check';
+import { propertyFor, assert } from '@fast-check/worker';
+
+const property = propertyFor(new URL(import.meta.url));
+assert(property(constant(null), (data) => Object.is(data, null)));