diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0db34bb..054bbb5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,8 @@
 # Changelog
+## [0.4.10] - 2023-11-07
+### Fixed 
+* fix wrong enum typing
+
 ## [0.4.9] - 2023-10-17
 ### Fixed 
 * fix missing includes and alias when use impl-only dep with header only
diff --git a/pccm/core/__init__.py b/pccm/core/__init__.py
index 3e50f78..a2f46d7 100644
--- a/pccm/core/__init__.py
+++ b/pccm/core/__init__.py
@@ -813,7 +813,8 @@ def arg(self,
             type: str,
             default: Optional[str] = None,
             pyanno: Optional[str] = None,
-            array: Optional[Union[int, str]] = None):
+            array: Optional[Union[int, str]] = None,
+            doc: Optional[str] = None):
         """add a argument.
         """
         type = str(type).strip()
@@ -824,7 +825,7 @@ def arg(self,
                 if not part.strip():
                     raise ValueError("you provide a empty name in", name)
                 args.append(
-                    Argument(part.strip(), type, default, pyanno=pyanno, array=array))
+                    Argument(part.strip(), type, default, pyanno=pyanno, array=array, doc=doc))
         else:
             arg_attrs = arg_parser(name)
             for arg_with_attr in arg_attrs:
@@ -835,7 +836,8 @@ def arg(self,
                              type,
                              default,
                              pyanno=pyanno,
-                             attrs=arg_with_attr.attrs, array=array))
+                             attrs=arg_with_attr.attrs, array=array,
+                             doc=doc))
         if type not in self._type_to_hook:
             hook = _get_attr_hook(type)
             if hook is not None:
@@ -1051,7 +1053,7 @@ def __get_this_type(self):
                 return cls_meta.python_inherit
         return getattr(self, PCCM_INIT_DECORATOR_KEY, None)
 
-    def set_this_class_type(self, this_cls_type: Type["Class"]):
+    def set_this_class_type(self, this_cls_type: Optional[Type["Class"]]):
         """get current Class Type during c++ constructing functions
         like add_member.
         """
diff --git a/pccm/middlewares/pybind.py b/pccm/middlewares/pybind.py
index 734b76f..8ce6c97 100644
--- a/pccm/middlewares/pybind.py
+++ b/pccm/middlewares/pybind.py
@@ -922,15 +922,19 @@ class xxx:
     # Class EnumName:
     for ec in enum_classes:
         ec_items = []  # type: List[Union[Block, str]]
+        ec_enum_items = []  # type: List[Union[Block, str]]
+
         enum_type = "EnumValue"
         if ec.scoped:
             enum_type = "EnumClassValue"
 
-        prefix = "class {}:".format(ec.name)
+        prefix = "class {}(enum.Enum):".format(ec.name)
         for key, value in ec.items:
-            ec_items.append("{k} = {ectype}({v}) # type: {ectype}".format(
+            ec_items.append("{k} = {clsname}.{k}".format(
+                k=key, v=value, clsname=ec.name))
+            ec_enum_items.append("{k} = {v}".format(
                 k=key, v=value, ectype=enum_type))
-        def_items = ec_items.copy()
+        def_items = ec_enum_items.copy()
         def_items.append("@staticmethod")
         def_items.append(
             "def __members__() -> Dict[str, {}]: ...".format(enum_type))
@@ -1112,7 +1116,7 @@ class xxx:
         TODO insert docstring if exists
         """
         init_import = "from typing import overload, Any, Callable, Dict, List, Optional, Set, Tuple, Type, Union"
-        init_pccm_import = "from pccm.stubs import EnumValue, EnumClassValue"
+        init_pccm_import = "from pccm.stubs import EnumValue, EnumClassValue, enum"
         ns_to_interfaces = OrderedDict()  # type: Dict[str, List[Block]]
         ns_to_imports = OrderedDict()  # type: Dict[str, List[str]]
         ns_to_interface = OrderedDict()  # type: Dict[str, str]
diff --git a/pccm/stubs/__init__.py b/pccm/stubs/__init__.py
index 8229570..99720d6 100644
--- a/pccm/stubs/__init__.py
+++ b/pccm/stubs/__init__.py
@@ -1,5 +1,5 @@
 from typing import Literal, Optional, Union
-
+import enum 
 
 class EnumClassValue(object):
     def __init__(self, value: int):