diff --git a/test/services/module_exports_compat.test.js b/test/services/module_exports_compat.test.js
new file mode 100644
index 00000000..8173c3c9
--- /dev/null
+++ b/test/services/module_exports_compat.test.js
@@ -0,0 +1,25 @@
+import { expect } from 'chai';
+import { createRequire } from 'module';
+
+const require = createRequire(import.meta.url);
+
+describe('Package export compatibility', function () {
+  it('supports CommonJS require', function () {
+    const EasyPostClient = require('../..');
+
+    expect(EasyPostClient).to.be.a('function');
+
+    const client = new EasyPostClient('apiKey');
+    expect(client).to.be.an('object');
+  });
+
+  it('supports ESM import default', async function () {
+    const module = await import('../..');
+    const EasyPostClient = module.default;
+
+    expect(EasyPostClient).to.be.a('function');
+
+    const client = new EasyPostClient('apiKey');
+    expect(client).to.be.an('object');
+  });
+});