diff --git a/lib/upload-s3.js b/lib/upload-s3.js
index 1c42338..6bf1d98 100644
--- a/lib/upload-s3.js
+++ b/lib/upload-s3.js
@@ -1,26 +1,25 @@
-const AWS = require('aws-sdk')
-
-// configure AWS to log to stdout
-AWS.config.update({
-    logger: process.stdout
-})
+const { S3Client } = require('@aws-sdk/client-s3')
+const { Upload } = require('@aws-sdk/lib-storage')
 
 async function uploadS3(stream, config, key) {
-    const s3 = new AWS.S3({
-        region: config.S3_REGION
+    // Construct S3 client with logger
+    const s3 = new S3Client({
+        region: config.S3_REGION,
+        logger: process.stdout
     })
-    const result = await s3.upload(
-        {
+    // Use lib-storage Upload for multipart upload
+    const upload = new Upload({
+        client: s3,
+        params: {
             Key: key,
             Bucket: config.S3_BUCKET,
             Body: stream,
             StorageClass: config.S3_STORAGE_CLASS
         },
-        {
-            partSize: config.S3_PART_SIZE,
-            queueSize: 1
-        }
-    ).promise()
+        partSize: config.S3_PART_SIZE,
+        queueSize: 1
+    })
+    const result = await upload.done()
 
     console.log('Uploaded to', result.Location)
     return result.Location
diff --git a/package.json b/package.json
index cfc64a7..8179030 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,8 @@
   "description": "Lambda function for executing pg_dump and streaming the output to s3.",
   "main": "index.js",
   "dependencies": {
+    "@aws-sdk/client-s3": "^3.600.0",
+    "@aws-sdk/lib-storage": "^3.600.0",
     "aws-sdk": "2.1693.0",
     "moment": "2.30.1"
   },