diff --git a/storage-s3/s3.test.ts b/storage-s3/s3.test.ts
new file mode 100644
index 0000000..57920af
--- /dev/null
+++ b/storage-s3/s3.test.ts
@@ -0,0 +1,25 @@
+// load packages
+import process from 'node:process'
+import { test } from '@cross/test'
+import { assertInstanceOf } from '@std/assert'
+// @deno-types="minio/dist/esm/minio.d.mts"
+import { Client } from 'minio'
+import sinon from 'sinon'
+
+test('s3 - exports a Minio.Client instance', async () => {
+	// Setup
+	const envStub = sinon.stub(process, 'env').value({
+		S3_ENDPOINT: 'test-endpoint',
+		MY_SCW_ACCESS_KEY: 'test-access-key',
+		MY_SCW_SECRET_KEY: 'test-secret-key',
+	})
+
+	// load module with stubbed env
+	const { minioClient } = await import('./s3.ts')
+
+	// Verify
+	assertInstanceOf(minioClient, Client, 'Should export a Minio.Client instance')
+
+	// Cleanup
+	envStub.restore()
+})
diff --git a/storage-s3/s3.ts b/storage-s3/s3.ts
index 23d7805..3bf9dd6 100644
--- a/storage-s3/s3.ts
+++ b/storage-s3/s3.ts
@@ -1,16 +1,12 @@
 // load packages
-import process from 'node:process'
-import { checkRequiredEnv } from '@frytg/check-required-env'
-import * as Minio from 'minio'
+import { getRequiredEnv } from '@frytg/check-required-env/get'
+// @deno-types="minio/dist/esm/minio.d.mts"
+import { Client } from 'minio'
 
-// check for env
-checkRequiredEnv('S3_ENDPOINT')
-checkRequiredEnv('MY_SCW_ACCESS_KEY')
-checkRequiredEnv('MY_SCW_SECRET_KEY')
-
-export const minioClient = new Minio.Client({
+// create a minio client
+export const minioClient = new Client({
 	useSSL: true,
-	endPoint: process.env.S3_ENDPOINT,
-	accessKey: process.env.MY_SCW_ACCESS_KEY,
-	secretKey: process.env.MY_SCW_SECRET_KEY,
+	endPoint: getRequiredEnv('S3_ENDPOINT', false),
+	accessKey: getRequiredEnv('MY_SCW_ACCESS_KEY', false),
+	secretKey: getRequiredEnv('MY_SCW_SECRET_KEY', false),
 })