Add versionadded tag to PyModule_GetFilenameObject() doc
diff --git a/Doc/c-api/module.rst b/Doc/c-api/module.rst
index 40acc4e..9e1af09 100644
--- a/Doc/c-api/module.rst
+++ b/Doc/c-api/module.rst
@@ -83,6 +83,8 @@
    unicode string, raise :exc:`SystemError` and return *NULL*; otherwise return
    a reference to a :ctype:`PyUnicodeObject`.
 
+   .. versionadded:: 3.2
+
 
 .. cfunction:: void* PyModule_GetState(PyObject *module)