diff --git a/setup.py b/setup.py
index 7fb6e43..72e1c1e 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,7 @@
     author='Adafruit Industries',
     author_email='circuitpython@adafruit.com',
 
-    install_requires=[],
+    install_requires=['pyserial', 'Adafruit-Blinka', 'adafruit-circuitpython-busdevice'],
 
     # Choose your license
     license='MIT',