diff --git a/appveyor.yml b/appveyor.yml
index 8cb965f..1c88119 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,7 +10,7 @@ environment:
 install:
   # We need wheel installed to build wheels
   - "%PYTHON%\\python.exe -m pip install pipenv"
-  - "pipenv install -d --system"
+  - "%PYTHON%\\python.exe -m pipenv install -d --system"
 
 build: off