diff --git a/.appveyor.yml b/.appveyor.yml
index 6aeaa223a77bdcade372535ba6355acc9f8c02dd..a59126d4e12536f492f51b300d4747585c8cd2f9 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -58,7 +58,7 @@ install:
   # Upgrade to the latest version of pip to avoid it displaying warnings
   # about it being out of date.
   - "pip install --disable-pip-version-check --user --upgrade pip"
-  - "pip install --upgrade --user tox"
+  - "python -m easy_install -U tox"
 
   # Install node/npm
   - ps: Install-Product node $env:8