diff --git a/rest/buckets/results_bucket.py b/rest/buckets/results_bucket.py
index a0e423a5..1e06fd6d 100644
--- a/rest/buckets/results_bucket.py
+++ b/rest/buckets/results_bucket.py
@@ -1,4 +1,5 @@
 import boto3
+from botocore.client import Config
 
 
 class ResultsBucket:
@@ -10,6 +11,7 @@ def __init__(self, bucket_name, region_name, endpoint_url, access_key_id, secret
             endpoint_url=endpoint_url,
             aws_access_key_id=access_key_id,
             aws_secret_access_key=secret_access_key,
+            config=Config(signature_version="s3v4"),
         )
 
     def put_file_to_bucket(self, content_as_string, prefix=None, file_name="file"):