diff --git a/isic_cli/cli/accession.py b/isic_cli/cli/accession.py
index c9c7267..0cd8788 100644
--- a/isic_cli/cli/accession.py
+++ b/isic_cli/cli/accession.py
@@ -1,4 +1,5 @@
 import json
+import mimetypes
 from pathlib import Path
 import sys
 
@@ -41,10 +42,19 @@ def upload(
         s3ff_client = S3FileFieldClient(f"{DOMAINS[ctx.env]}/api/v2/s3-upload/", ctx.session)
 
         with accession.open("rb") as file_stream:
+            content_type = mimetypes.guess_type(accession.name)[0]
+
+            if content_type is None:
+                click.secho(
+                    f"Unable to determine content type for {accession.name}.", fg="red", err=True
+                )
+                sys.exit(1)
+
             field_value = s3ff_client.upload_file(
-                file_stream,
-                accession.name,
-                "ingest.Accession.original_blob",
+                file_stream=file_stream,
+                file_name=accession.name,
+                file_content_type=content_type,
+                field_id="ingest.Accession.original_blob",
             )
 
         try:
diff --git a/setup.py b/setup.py
index b768c9f..18e3752 100644
--- a/setup.py
+++ b/setup.py
@@ -38,7 +38,7 @@
     install_requires=[
         # we use the path_type=Path feature from click which was added in Click 8
         "click>=8",
-        "django-s3-file-field-client",
+        "django-s3-file-field-client>=1.0.0",
         # We expect girder-cli-oauth-client to drop oob support in the future
         "girder-cli-oauth-client<1.0.0",
         "humanize",