diff --git a/Misc/ACKS b/Misc/ACKS
index b5ebf06..63c126c 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -101,6 +101,7 @@
 Alexander “Саша” Belopolsky
 Eli Bendersky
 David Benjamin
+Oscar Benjamin
 Andrew Bennetts
 Andy Bensky
 Bennett Benson
diff --git a/Misc/NEWS b/Misc/NEWS
index 63601d8..c787537 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -71,6 +71,9 @@
 Library
 -------
 
+- Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except
+  when necessary.  Patch by Oscar Benjamin.
+
 - Properly initialize all fields of a SSL object after allocation.
 
 - Issue #4366: Fix building extensions on all platforms when --enable-shared