From 6c8a66769134200c988f79d4c47f260e4182c093 Mon Sep 17 00:00:00 2001
From: David Wilson <dw@botanicus.net>
Date: Fri, 7 Sep 2018 21:09:41 +0100
Subject: [PATCH] docs: update Changelog.

---
 docs/changelog.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/docs/changelog.rst b/docs/changelog.rst
index 482d1460..b79fa2dd 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -119,6 +119,13 @@ Core Library
   and in every case it should be trivial to replace with a classmethod. The
   documentation was fixed.
 
+* `#337 <https://github.com/dw/mitogen/issues/337>`_: to avoid a scaling
+  limitation, SSH no longer allocates a PTY for every OpenSSH client. PTYs are
+  only allocated if a password is supplied, or when `host_key_checking=accept`.
+  This is since Linux has a default of 4096 PTYs (``kernel.pty.max``), while OS
+  X has a default of 127 and an absolute maximum of 999
+  (``kern.tty.ptmx_max``).
+
 * `#339 <https://github.com/dw/mitogen/issues/339>`_: the LXD connection method
   was erroneously executing LXC Classic commands.