diff --git a/Misc/NEWS b/Misc/NEWS
index 5307fe8..81586f0 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,11 @@
 Core and Builtins
 -----------------
 
+- Issue #9670: Increase the default stack size for secondary threads on
+  Mac OS X and FreeBSD to reduce the chances of a crash instead of a
+  "maximum recursion depth" RuntimeError exception.
+  (original patch by Ronald Oussoren)
+
 - Issue #11650: PyOS_StdioReadline() retries fgets() if it was interrupted
   (EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch
   written by Charles-Francois Natali.