diff --git a/pep-0574.rst b/pep-0574.rst
index 05e2ed04cc3..01a3f0dffb3 100644
--- a/pep-0574.rst
+++ b/pep-0574.rst
@@ -418,6 +418,15 @@ It would simply be serialized as a ``bytes`` object (if read-only) or
   implementors.
 
 
+Implementation
+==============
+
+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]_.
+
+
 Related work
 ============
 
@@ -464,6 +473,12 @@ References
 .. [#pep-554] PEP 554 -- Multiple Interpreters in the Stdlib
    https://www.python.org/dev/peps/pep-0554/
 
+.. [#pickle5-git] ``pickle5`` branch on GitHub
+   https://github.com/pitrou/cpython/tree/pickle5
+
+.. [#pickle5-pypi] ``pickle5`` project on PyPI
+   https://pypi.org/project/pickle5/
+
 
 Copyright
 =========