diff --git a/vnpy/api/oes/generate_oes.sh b/vnpy/api/oes/generate_oes.sh
index 4c43d92f..4231146c 100644
--- a/vnpy/api/oes/generate_oes.sh
+++ b/vnpy/api/oes/generate_oes.sh
@@ -1,14 +1,5 @@
 #!/usr/bin/env bash
 
-script_autocxxpy_version="autocxxpy 0.4.0"
-autocxxpy_version=`python -m autocxxpy version`
-if [[ $autocxxpy_version != $script_autocxxpy_version ]]; then
-    echo "autocxxpy version not match!"
-    echo "current: " $autocxxpy_version
-    echo "script: " $script_autocxxpy_version
-    echo "to continue, change version of autocxxpy or modify this script."
-    exit 1
-fi
 python -m autocxxpy generate \
     vnoes \
     oes_api/oes_api.h \
@@ -19,7 +10,8 @@ python -m autocxxpy generate \
     --copy-autocxxpy-includes vnoes/include \
     --pyi-output-dir .\
     --no-clear-pyi-output-dir \
-    --no-callback-pattern ".*"
+    --no-callback-pattern ".*" \
+    --enforce-version 0.4.1
 
 #####################################
 # of unsupported functions: 5
diff --git a/vnpy/api/oes/vnoes/include/autocxxpy/callback_wrapper.hpp b/vnpy/api/oes/vnoes/include/autocxxpy/callback_wrapper.hpp
index 685b2156..1ac97966 100644
--- a/vnpy/api/oes/vnoes/include/autocxxpy/callback_wrapper.hpp
+++ b/vnpy/api/oes/vnoes/include/autocxxpy/callback_wrapper.hpp
@@ -82,17 +82,23 @@ namespace autocxxpy
     struct async_dispatch_exception : public std::exception
     {
         async_dispatch_exception(const char *what, const pybind11::object &instance, std::string function_name)
-            : std::exception(what), instance(instance), function_name(function_name)
+            : _what(what), instance(instance), function_name(function_name)
         {}
+		std::string _what;
         pybind11::object instance;
         std::string function_name;
 
         // mutable version of what() for pybind11 to make it happy
         inline const char* what_mutable() noexcept
         {
-            return std::exception::what();
+            return what();
         }
-    };
+
+		virtual char const* what() const override
+		{
+			return _what.c_str();
+		}
+	};
 
     struct async_callback_exception_handler
     {