2 files changed, 4 insertions, 0 deletions
diff --git a/Misc/ACKS b/Misc/ACKS
index 08fc572..900fae7 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -548,6 +548,7 @@ Vincent Legoll
 Kip Lehman
 Joerg Lehmann
 Robert Lehmann
+Petri Lehtinen
 Luke Kenneth Casson Leighton
 Marc-Andre Lemburg
 John Lenton
diff --git a/Misc/NEWS b/Misc/NEWS
index 8a70ce9..1995b14 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -187,6 +187,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #12021: Make mmap's read() method argument optional. Patch by Petri
+  Lehtinen.
+
 - Issue #9205: concurrent.futures.ProcessPoolExecutor now detects killed
   children and raises BrokenProcessPool in such a situation.  Previously it
   would reliably freeze/deadlock.