diff --git a/Doc/c-api/bytes.rst b/Doc/c-api/bytes.rst
index 916e20e..c9a114a 100644
--- a/Doc/c-api/bytes.rst
+++ b/Doc/c-api/bytes.rst
@@ -118,6 +118,12 @@
    arguments.
 
 
+.. cfunction:: PyObject* PyBytes_FromObject(PyObject *o)
+
+   Return the bytes representation of object *o* that implements the buffer
+   protocol.
+
+
 .. cfunction:: Py_ssize_t PyBytes_Size(PyObject *o)
 
    Return the length of the bytes in bytes object *o*.
diff --git a/Doc/c-api/object.rst b/Doc/c-api/object.rst
index 193ab95..7b9682c 100644
--- a/Doc/c-api/object.rst
+++ b/Doc/c-api/object.rst
@@ -139,6 +139,14 @@
    Python expression ``str(o)``.  Called by the :func:`str` built-in function
    and, therefore, by the :func:`print` function.
 
+.. cfunction:: PyObject* PyObject_Bytes(PyObject *o)
+
+   .. index:: builtin: bytes
+
+   Compute a bytes representation of object *o*.  *NULL* is returned on failure
+   and a bytes object on success.  This is equivalent to the Python expression
+   ``bytes(o)``.
+
 
 .. cfunction:: int PyObject_IsInstance(PyObject *inst, PyObject *cls)