diff --git a/letta/server/rest_api/routers/v1/sources.py b/letta/server/rest_api/routers/v1/sources.py
index d790e128..b2b66a2c 100644
--- a/letta/server/rest_api/routers/v1/sources.py
+++ b/letta/server/rest_api/routers/v1/sources.py
@@ -4,6 +4,7 @@ from typing import List, Optional
 
 from fastapi import APIRouter, BackgroundTasks, Depends, Header, HTTPException, Query, UploadFile
 
+import letta.constants as constants
 from letta.schemas.file import FileMetadata
 from letta.schemas.job import Job
 from letta.schemas.passage import Passage