diff --git a/pep-0670.rst b/pep-0670.rst
index 27902be96..8f6133f36 100644
--- a/pep-0670.rst
+++ b/pep-0670.rst
@@ -578,6 +578,14 @@ Replacing macros with static inline functions makes Python
 functions.
 
 
+Post History
+============
+
+* python-dev: `PEP 670: Convert macros to functions in the Python C API
+  <https://mail.python.org/archives/list/python-dev@python.org/thread/2GN646CGWGTO6ZHHU7JTA5XWDF4ULM77/>`_
+  (October 2021)
+
+
 References
 ==========