diff --git a/packages/@aws-cdk/aws-s3-deployment/lambda/src/index.py b/packages/@aws-cdk/aws-s3-deployment/lambda/src/index.py
index 64759acd21a46..badd1e4543aef 100644
--- a/packages/@aws-cdk/aws-s3-deployment/lambda/src/index.py
+++ b/packages/@aws-cdk/aws-s3-deployment/lambda/src/index.py
@@ -5,6 +5,7 @@
 import json
 import traceback
 import logging
+import shutil
 from uuid import uuid4
 
 from botocore.vendored import requests
@@ -111,6 +112,7 @@ def s3_deploy(s3_source_zip, s3_dest):
 
     # sync from "contents" to destination
     aws_command("s3", "sync", "--delete", contents_dir, s3_dest)
+    shutil.rmtree(workdir)
 
 #---------------------------------------------------------------------------------------------------
 # executes an "aws" cli command