diff --git a/pep-0574.rst b/pep-0574.rst
index 5ef0c716e..e98ab0f1c 100644
--- a/pep-0574.rst
+++ b/pep-0574.rst
@@ -316,7 +316,7 @@ Improved in-band performance
 
 Even in-band pickling can be improved by returning a ``PickleBuffer``
 instance from ``__reduce_ex__``, as one copy is avoided on the serialization
-path [#ogrisel-numpy]_ [#arrow-pickle5-benchmark]_.
+path [#arrow-pickle5-benchmark]_ [#numpy-pickle5-benchmark]_.
 
 
 Caveats
@@ -358,7 +358,7 @@ original Numpy object (and, incidentally, keeping it alive)::
    >>> a[0]
    0.0
    >>> buffers = []
-   >>> data = pickle.dumps(a, protocol=5, buffer_callback=buffers.extend)
+   >>> data = pickle.dumps(a, protocol=5, buffer_callback=buffers.append)
    >>> b = pickle.loads(data, buffers=buffers)
    >>> b[0] = 42
    >>> a[0]
@@ -460,7 +460,10 @@ A first implementation is available in the author's GitHub fork [#pickle5-git]_.
 An experimental backport for Python 3.6 and 3.7 is downloadable from PyPI
 [#pickle5-pypi]_.
 
-Experimental support for out-of-band buffers was also added to the Apache
+Support for pickle protocol 5 and out-of-band buffers was added to Numpy
+[#numpy-pickle5-pr]_.
+
+Support for pickle protocol 5 and out-of-band buffers was added to the Apache
 Arrow Python bindings [#arrow-pickle5-pr]_.
 
 
@@ -516,15 +519,18 @@ References
 .. [#pickle5-pypi] ``pickle5`` project on PyPI
    https://pypi.org/project/pickle5/
 
-.. [#ogrisel-numpy] Draft use of pickle protocol 5 for Numpy array pickling
-   https://gist.github.com/ogrisel/a2b0e5ae4987a398caa7f9277cb3b90a
-
 .. [#arrow-pickle5-pr] Pull request: Experimental zero-copy pickling in Apache Arrow
    https://github.com/apache/arrow/pull/2161
 
 .. [#arrow-pickle5-benchmark] Benchmark zero-copy pickling in Apache Arrow
    https://github.com/apache/arrow/pull/2161#issuecomment-407859213
 
+.. [#numpy-pickle5-pr] Pull request: Support pickle protocol 5 in Numpy
+   https://github.com/numpy/numpy/pull/12011
+
+.. [#numpy-pickle5-benchmark] Benchmark pickling Numpy arrays with different pickle protocols
+   https://github.com/numpy/numpy/issues/11161#issuecomment-424035962
+
 
 Copyright
 =========