diff --git a/setup.py b/setup.py
index 371014e..540f4e1 100644
--- a/setup.py
+++ b/setup.py
@@ -21,6 +21,7 @@
         'pygeodiff==2.0.4',
         'pytz==2022.1',
         'click==8.1.3',
+        'pathvalidate==3.3.1',
     ],
 
     entry_points={