Moving to distribute, as of yet untested
diff --git a/setup.py b/setup.py
index f5cbe34..b757309 100755
--- a/setup.py
+++ b/setup.py
@@ -1,8 +1,8 @@
 #!/usr/bin/env python
 
-# Ensure that setuptools are installed.
-import ez_setup
-ez_setup.use_setuptools()
+# Ensure that 'distribute' is installed.
+from distribute_setup import use_setuptools
+use_setuptools()
 
 from setuptools import setup
 
@@ -29,4 +29,7 @@
         'Programming Language :: Python',
         'Topic :: Security :: Cryptography',
     ],
+    install_requires=[
+        'pyasn1 >= 0.0.13',
+    ],
 )