diff --git a/backend/app/services/horizons.py b/backend/app/services/horizons.py
index 6099925..7d09574 100644
--- a/backend/app/services/horizons.py
+++ b/backend/app/services/horizons.py
@@ -7,6 +7,7 @@ import logging
 import re
 import httpx
 import os
+from sqlalchemy.ext.asyncio import AsyncSession # Added this import
 
 from app.models.celestial import Position, CelestialBody
 from app.config import settings