diff --git a/Misc/ACKS b/Misc/ACKS
index 20eeafd..db01d14 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1121,6 +1121,7 @@
 Ha Shao
 Mark Shannon
 Richard Shapiro
+Vlad Shcherbina
 Justin Sheehy
 Charlie Shepherd
 Bruce Sherwood
diff --git a/Misc/NEWS b/Misc/NEWS
index 8052c6b..1c0f3b2 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -280,6 +280,10 @@
 - Issue #18113: Fixed a refcount leak in the curses.panel module's
   set_userptr() method.  Reported by Atsuo Ishimoto.
 
+- Issue #18849: Fixed a Windows-specific tempfile bug where collision with an
+  existing directory caused mkstemp and related APIs to fail instead of
+  retrying. Report and fix by Vlad Shcherbina.
+
 C API
 -----