diff --git a/server.js b/server.js
index 646d390..4132474 100644
--- a/server.js
+++ b/server.js
@@ -3,7 +3,7 @@ const express = require("express");
 const multer = require("multer");
 const path = require("path");
 const crypto = require("crypto");
-const { S3Client, PutObjectCommand, HeadBucketCommand, DeleteObjectCommand } = require("@aws-sdk/client-s3");
+const { S3Client, PutObjectCommand, HeadBucketCommand, DeleteObjectCommand, CreateMultipartUploadCommand, UploadPartCommand, CompleteMultipartUploadCommand, AbortMultipartUploadCommand } = require("@aws-sdk/client-s3");
 const { getSignedUrl } = require("@aws-sdk/s3-request-presigner");
 const { Upload } = require("@aws-sdk/lib-storage");
 const { NodeHttpHandler } = require("@smithy/node-http-handler");
@@ -925,13 +925,6 @@ server.requestTimeout = 0;
 // Achieves Aspera-class throughput over plain HTTP — no UDP, no port forwarding needed.
 // Based on the same approach used by MASV.
 
-const {
-  CreateMultipartUploadCommand,
-  UploadPartCommand,
-  CompleteMultipartUploadCommand,
-  AbortMultipartUploadCommand,
-} = require("@aws-sdk/client-s3");
-
 // In-memory multipart session map
 // uploadId → { key, bucket, parts: [{PartNumber, ETag}], partCount }
 const chunkSessions = new Map();