diff --git a/package.json b/package.json
index 9781284e4..cde68f774 100644
--- a/package.json
+++ b/package.json
@@ -95,6 +95,7 @@
     "@grpc/grpc-js": "^1.0.3",
     "@grpc/proto-loader": "^0.7.0",
     "@types/async-retry": "^1.4.3",
+    "@types/duplexify": "^3.6.4",
     "@types/mime": "^3.0.0",
     "@types/mocha": "^9.1.1",
     "@types/mockery": "^1.4.29",
diff --git a/samples/system-test/buckets.test.js b/samples/system-test/buckets.test.js
index 744f6b7a8..bf2ee08fe 100644
--- a/samples/system-test/buckets.test.js
+++ b/samples/system-test/buckets.test.js
@@ -59,6 +59,9 @@ async function deleteAllBucketsAsync() {
 }
 
 after(deleteAllBucketsAsync);
+afterEach(async () => {
+  await new Promise(res => setTimeout(res, 1000));
+});
 
 it('should create a bucket', async () => {
   const output = execSync(`node createNewBucket.js ${bucketName}`);