diff --git a/Misc/NEWS b/Misc/NEWS
index 80e524d..660e88a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 Core and Builtins
 -----------------
 
+- Issue #3965: Fixed a crash on Windows when open() is given an invalid
+  filename or mode, and the filename is a unicode string.
+
 - Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
 
 Library