Issue #19373: Add Misc/NEWS entry.
diff --git a/Misc/NEWS b/Misc/NEWS
index 04bcd7b..6432564 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -147,6 +147,9 @@
 
 - Issue #15792: Correct build options on Win64. Patch by Jeremy Kloth.
 
+- Issue #19373: Apply upstream change to Tk 8.5.15 fixing OS X 10.9
+  screen refresh problem for OS X installer build.
+
 Tools/Demos
 -----------