diff --git a/Include/modsupport.h b/Include/modsupport.h
index a678257..54c7add 100644
--- a/Include/modsupport.h
+++ b/Include/modsupport.h
@@ -18,6 +18,10 @@
 extern DL_IMPORT(int) PyArg_VaParse(PyObject *, char *, va_list);
 extern DL_IMPORT(PyObject *) Py_VaBuildValue(char *, va_list);
 
+extern DL_IMPORT(int) PyModule_AddObject(PyObject *, char *, PyObject *);
+extern DL_IMPORT(int) PyModule_AddIntConstant(PyObject *, char *, long);
+extern DL_IMPORT(int) PyModule_AddStringConstant(PyObject *, char *, char *);
+
 #define PYTHON_API_VERSION 1009
 #define PYTHON_API_STRING "1009"
 /* The API version is maintained (independently from the Python version)
diff --git a/Python/modsupport.c b/Python/modsupport.c
index c87f994..9c2dc18 100644
--- a/Python/modsupport.c
+++ b/Python/modsupport.c
@@ -459,3 +459,30 @@
 
 	return res;
 }
+
+int
+PyModule_AddObject(PyObject *m, char *name, PyObject *o)
+{
+	PyObject *dict;
+        if (!PyModule_Check(m) || o == NULL)
+                return -1;
+	dict = PyModule_GetDict(m);
+	if (dict == NULL)
+		return -1;
+        if (PyDict_SetItemString(dict, name, o))
+                return -1;
+        Py_DECREF(o);
+        return 0;
+}
+
+int 
+PyModule_AddIntConstant(PyObject *m, char *name, long value)
+{
+	return PyModule_AddObject(m, name, PyInt_FromLong(value));
+}
+
+int 
+PyModule_AddStringConstant(PyObject *m, char *name, char *value)
+{
+	return PyModule_AddObject(m, name, PyString_FromString(value));
+}