diff --git a/willisapi_client/__version__.py b/willisapi_client/__version__.py
index e72d0b9..324bc88 100644
--- a/willisapi_client/__version__.py
+++ b/willisapi_client/__version__.py
@@ -1,7 +1,7 @@
 """Version details for willisapi_client"""
 
 __client__ = "willisapi_client"
-__latestVersion__ = "1.9.5"
+__latestVersion__ = "1.9.6"
 __url__ = "https://github.com/bklynhlth/willsiapi_client"
 __short_description__ = "A Python client for willisapi"
 __content_type__ = "text/markdown"
diff --git a/willisapi_client/services/metadata/upload.py b/willisapi_client/services/metadata/upload.py
index 2115dc0..6fc9e67 100644
--- a/willisapi_client/services/metadata/upload.py
+++ b/willisapi_client/services/metadata/upload.py
@@ -5,6 +5,10 @@
 import mimetypes
 import os
 
+# Register extensions that Python's default mimetypes table doesn't know about.
+# The server signs presigned URLs with these types, so the client must match.
+mimetypes.add_type("application/vnd.apache.parquet", ".parquet")
+
 from willisapi_client.timer import measure
 from willisapi_client.willisapi_client import WillisapiClient
 from willisapi_client.logging_setup import logger as logger