diff --git a/scripts/lambda b/scripts/lambda
index a8e0e22..a972962 100755
--- a/scripts/lambda
+++ b/scripts/lambda
@@ -192,13 +192,20 @@ def upload(requirements, local_package, config_file, profile):
     multiple=True,
     help='Install local package as well.',
 )
-def deploy_s3(requirements, local_package, config_file, profile):
+@click.option(
+    '--preserve-vpc',
+    default=False,
+    is_flag=True,
+    help='Preserve VPC configuration on existing functions',
+)
+def deploy_s3(requirements, local_package, config_file, profile, preserve_vpc):
     aws_lambda.deploy_s3(
         CURRENT_DIR,
         requirements=requirements,
         local_package=local_package,
         config_file=config_file,
         profile_name=profile,
+        preserve_vpc=preserve_vpc,
     )