diff --git a/appveyor.yml b/appveyor.yml
index 26104a43..710d1435 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,6 +10,7 @@ environment:
 build: off
 
 install:
+  - "%PYTHON%\\python.exe -m pip install --upgrade pip"
   - "%PYTHON%\\python.exe -m pip install .[testing]"
 
 test_script: