diff --git a/app/backend/api/chatbot.py b/app/backend/api/chatbot.py
index 19e38b0..6f12d4e 100644
--- a/app/backend/api/chatbot.py
+++ b/app/backend/api/chatbot.py
@@ -10,12 +10,12 @@ from .utils import ConnectionManager
 router = APIRouter()
 
 # Load environment variables
-os.environ["DEEPSEEK_API_KEY"] = config("DEEPSEEK_API_KEY", 
-                                        cast=str, 
-                                        default="sk-XXXXXXXXXX")
-os.environ["TAVILY_API_KEY"] = config("TAVILY_API_KEY", 
-                                      cast=str, 
-                                      default="tvly-dev-wXXXXXX")
+os.environ["DEEPSEEK_API_KEY"] = config(
+    "DEEPSEEK_API_KEY", cast=str, default="sk-XXXXXXXXXX"
+)
+os.environ["TAVILY_API_KEY"] = config(
+    "TAVILY_API_KEY", cast=str, default="tvly-dev-wXXXXXX"
+)
 
 # Initialize the DeepSeek chat model
 llm_chat = ChatDeepSeek(