Added older datetime timezone method

submit.py

@@ -5,7 +5,7 @@ import json
 
 from click import pass_obj
 import gradio as gr
-from datetime import datetime, UTC
+from datetime import datetime, timezone
 import uuid
 
 from constants import API, SUBMISSIONS_REPO
@@ -19,8 +19,8 @@ def upload_submission(
     model_name: str,
     model_description: str,
 ):
-    timestamp = datetime.now(UTC).isoformat()
-    date = datetime.now(UTC).date().isoformat()
+    timestamp = datetime.now(timezone.utc).isoformat()
+    date = datetime.now(timezone.utc).date().isoformat()
     submission_id = str(uuid.uuid4())
 
     with file_path.open("rb") as f_in: