diff --git a/dargs/__init__.py b/dargs/__init__.py
index af2f59b..77ec18d 100644
--- a/dargs/__init__.py
+++ b/dargs/__init__.py
@@ -2,4 +2,4 @@
 
 from .dargs import Argument, ArgumentEncoder, Variant
 
-__all__ = ["Argument", "Variant", "ArgumentEncoder"]
+__all__ = ["Argument", "ArgumentEncoder", "Variant"]