diff --git a/setup.py b/setup.py
index 6cb9f64..e958489 100644
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,8 @@
 
     install_requires=[
         'Adafruit-Blinka',
-        'adafruit-circuitpython-busdevice'
+        'adafruit-circuitpython-busdevice',
+        'adafruit-circuitpython-binascii',
     ],
 
     # Choose your license
@@ -61,5 +62,5 @@
     # simple. Or you can use find_packages().
     # TODO: IF LIBRARY FILES ARE A PACKAGE FOLDER,
     #       CHANGE `py_modules=['...']` TO `packages=['...']`
-    py_modules=['adafruit_atecc'],
+    packages=['adafruit_atecc'],
 )