diff --git a/setup.py b/setup.py
index 2a0ba59..b0be6f9 100644
--- a/setup.py
+++ b/setup.py
@@ -40,4 +40,18 @@
       url='https://github.com/google/python-gflags',
       packages=['gflags', 'gflags.third_party', 'gflags.third_party.pep257'],
       data_files=[('bin', ['gflags2man.py'])],
+      classifiers=(
+        'Development Status :: 5 - Production/Stable',
+        'Intended Audience :: Developers',
+        'Natural Language :: English',
+        'License :: OSI Approved :: BSD',
+        'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: Implementation :: CPython',
+        'Programming Language :: Python :: Implementation :: PyPy'),
      )