diff --git a/uotp/schemas.py b/uotp/schemas.py
index c61ec6c..5c5cbfd 100644
--- a/uotp/schemas.py
+++ b/uotp/schemas.py
@@ -4,7 +4,7 @@ import pyotp
 from os.path import join
 
 from .helper import is_valid_otp
-from .config import etcd_client
+from .config import etcd_client, env_vars
 from typing import Union