diff --git a/Misc/NEWS b/Misc/NEWS
index 7960f07..aa1ffd8 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -457,6 +457,9 @@
 Documentation
 -------------
 
+- Patch #1671450: add a section about subclassing builtin types to the
+  "extending and embedding" tutorial.
+
 - Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
   docs.