First release screwup: cryptography does not support Python 2.4 or Python 2.5 so we do not either.
diff --git a/setup.py b/setup.py
index af39efc..95d8635 100755
--- a/setup.py
+++ b/setup.py
@@ -48,11 +48,10 @@
'Operating System :: MacOS :: MacOS X',
'Operating System :: Microsoft :: Windows',
'Operating System :: POSIX',
- 'Programming Language :: Python :: 2.4',
- 'Programming Language :: Python :: 2.5',
'Programming Language :: Python :: 2.6',
'Programming Language :: Python :: 2.7',
'Programming Language :: Python :: 3.2',
+ 'Programming Language :: Python :: 3.3',
'Programming Language :: Python :: Implementation :: CPython',
'Programming Language :: Python :: Implementation :: PyPy',
'Topic :: Security :: Cryptography',