From 361ca8389134f2206ad27792af0be37b1ce8a75f Mon Sep 17 00:00:00 2001
From: Ray Speth <speth@mit.edu>
Date: Sat, 5 Nov 2016 16:24:33 -0400
Subject: [PATCH] [CI] Upgrade pip when building on AppVeyor

Warning messages from older pip versions cause AppVeyor to think that the build
has failed and abort.
---
 appveyor.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/appveyor.yml b/appveyor.yml
index 08c39e1b6..f7881764a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,7 @@
 version: 1.0.{build}
 install:
 - ps: |
+    C:\Python27-x64\Scripts\pip.exe install --upgrade pip
     C:\Python27-x64\Scripts\pip.exe install --egg scons
     C:\Python27-x64\Scripts\pip.exe install numpy
     C:\Python27-x64\Scripts\pip.exe install cython