From 26dad41c824392eadb4422bb3fb416edd5f1b7e4 Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Mon, 13 May 2019 11:19:15 -0400
Subject: [PATCH] Pin the older tox to see if that helps

---
 .appveyor.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.appveyor.yml b/.appveyor.yml
index 3306d2826..a705f4d71 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -13,8 +13,8 @@ environment:
 
 install:
   - |
-    %PYTHON%\python.exe -m pip install -U "pip<19"
-    %PYTHON%\python.exe -m pip install wheel tox virtualenv
+    %PYTHON%\python.exe -m pip install -U pip
+    %PYTHON%\python.exe -m pip install wheel tox==3.9.0 virtualenv
 
 # note:
 # %PYTHON% has: python.exe