diff --git a/scripts/appveyor.yml b/scripts/appveyor.yml
index d71fdfa94..2454b97d6 100644
--- a/scripts/appveyor.yml
+++ b/scripts/appveyor.yml
@@ -13,6 +13,7 @@ environment:
 install:
   # Install dependencies from pypi
   - "%PYTHON%\\python.exe -m pip install sqlalchemy alembic chardet beautifulsoup4 Mako nose mock pyodbc psycopg2 pypiwin32 pyenchant websockets asyncio waitress six webob requests pyqt5 lxml PyInstaller"
+  - "%PYTHON%\\python.exe -m pip show -f PyInstaller
   # Install mysql dependency
   - appveyor DownloadFile http://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.1.7.zip
   - 7z x mysql-connector-python-2.1.7.zip