diff --git a/CHANGELOG.md b/CHANGELOG.md
index 11f2007..8428605 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 - Proj extension, license, asset paths ([#12](https://github.com/stactools-packages/threedep/pull/12))
 - GPKG path ([#13](https://github.com/stactools-packages/threedep/pull/13))
+- AWS access to the sources ([#17](https://github.com/stactools-packages/threedep/pull/17))
 
 ## v0.2.0
 
diff --git a/src/stactools/threedep/utils.py b/src/stactools/threedep/utils.py
index da0acf5..9036738 100644
--- a/src/stactools/threedep/utils.py
+++ b/src/stactools/threedep/utils.py
@@ -3,6 +3,8 @@
 from typing import List, Optional
 
 import boto3
+from botocore import UNSIGNED
+from botocore.config import Config
 
 from stactools.threedep import utils
 from stactools.threedep.constants import AWS_BUCKET, AWS_PREFIX, USGS_FTP_SERVER
@@ -32,7 +34,7 @@ def _fetch_ids_from_usgs_ftp(product: str) -> List[str]:
 def _fetch_ids_from_aws(product: str) -> List[str]:
     path = os.path.dirname(utils.path(product, ""))
     prefix = os.path.join(AWS_PREFIX, path)
-    client = boto3.client("s3")
+    client = boto3.client("s3", config=Config(signature_version=UNSIGNED))
     paginator = client.get_paginator("list_objects_v2")
     page_iterator = paginator.paginate(Bucket=AWS_BUCKET, Prefix=prefix)
     filtered_iterator = page_iterator.search("Contents[?ends_with(Key, `.xml`)].Key")