diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 07e4d01..a4ee03a 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -342,6 +342,8 @@
    otherwise return a new allocated buffer (use :cfunc:`PyMem_Free` to free the
    buffer).
 
+   .. versionadded:: 3.2
+
 
 .. cfunction:: Py_ssize_t PyUnicode_GetSize(PyObject *unicode)