diff --git a/skyflow/utils/constants.py b/skyflow/utils/constants.py
index 05d2838..3f11efa 100644
--- a/skyflow/utils/constants.py
+++ b/skyflow/utils/constants.py
@@ -21,6 +21,7 @@ class HttpStatusCode:
     OK = 200
     BAD_REQUEST = 400
     UNAUTHORIZED = 401
+    NOT_FOUND = 404
     INTERNAL_SERVER_ERROR = 500