diff --git a/src/if_python.c b/src/if_python.c
index fc493ec..d35e9ab 100644
--- a/src/if_python.c
+++ b/src/if_python.c
@@ -165,6 +165,7 @@
 # define PySys_SetObject dll_PySys_SetObject
 # define PySys_SetArgv dll_PySys_SetArgv
 # define PyType_Type (*dll_PyType_Type)
+# define PyType_Ready (*dll_PyType_Ready)
 # define Py_BuildValue dll_Py_BuildValue
 # define Py_FindMethod dll_Py_FindMethod
 # define Py_InitModule4 dll_Py_InitModule4
@@ -224,6 +225,7 @@
 static int(*dll_PySys_SetObject)(char *, PyObject *);
 static int(*dll_PySys_SetArgv)(int, char **);
 static PyTypeObject* dll_PyType_Type;
+static int (*dll_PyType_Ready)(PyTypeObject *type);
 static PyObject*(*dll_Py_BuildValue)(char *, ...);
 static PyObject*(*dll_Py_FindMethod)(struct PyMethodDef[], PyObject *, char *);
 static PyObject*(*dll_Py_InitModule4)(char *, struct PyMethodDef *, char *, PyObject *, int);
@@ -305,6 +307,7 @@
     {"PySys_SetObject", (PYTHON_PROC*)&dll_PySys_SetObject},
     {"PySys_SetArgv", (PYTHON_PROC*)&dll_PySys_SetArgv},
     {"PyType_Type", (PYTHON_PROC*)&dll_PyType_Type},
+    {"PyType_Ready", (PYTHON_PROC*)&dll_PyType_Ready},
     {"Py_BuildValue", (PYTHON_PROC*)&dll_Py_BuildValue},
     {"Py_FindMethod", (PYTHON_PROC*)&dll_Py_FindMethod},
 # if (PY_VERSION_HEX >= 0x02050000) && SIZEOF_SIZE_T != SIZEOF_INT