From 366f81f25216615bc0ae5a3a059b05b9caea47a2 Mon Sep 17 00:00:00 2001
From: Anthony Sottile <asottile@umich.edu>
Date: Wed, 18 Nov 2015 10:47:51 -0800
Subject: [PATCH] Upgrade virtualenv

---
 appveyor.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/appveyor.yml b/appveyor.yml
index 3a30c132..d9e3b8b6 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -6,6 +6,7 @@ environment:
 install:
     - "SET PATH=C:\\Python34;C:\\Python34\\Scripts;%PATH%"
     - pip install tox
+    - pip install virtualenv --upgrade
 
 # Not a C# project
 build: false