diff --git a/appveyor.yml b/appveyor.yml
index edc02944..5a06b717 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,6 +4,7 @@ branches:
 install:
   - ps: (new-object net.webclient).DownloadFile('https://raw.github.com/pypa/pip/master/contrib/get-pip.py', 'C:\get-pip.py')
   - C:\Python27\python.exe c:\get-pip.py
+  - pip instal -U pip
 build: off
 test_script:
   - C:\Python27\python.exe setup.py test