diff --git a/app/weather.py b/app/weather.py
index c7e8819..9080023 100644
--- a/app/weather.py
+++ b/app/weather.py
@@ -38,7 +38,7 @@ async def fetch_weather_data(city: str, date: str) -> dict:
     """
     async with httpx.AsyncClient() as client:
         try:
-            response = await client.get(WEATHER_API_URL, params={"key": API_KEY, "q": city, "dt": date})
+            response = await client.get(Config.WEATHER_API_URL, params={"key": Config.API_KEY, "q": city, "dt": date})
             response.raise_for_status()
             data = response.json()