diff --git a/setup.py b/setup.py
index 8bdde41..a0549e8 100644
--- a/setup.py
+++ b/setup.py
@@ -21,6 +21,8 @@
     ],
     install_requires=[
         'path.py',
+        'filelock',
+        'cached-property'
     ],
     classifiers=[
         'Development Status :: 4 - Beta',