diff --git a/runbench.py b/runbench.py
index a4a372a..1fcfa0b 100644
--- a/runbench.py
+++ b/runbench.py
@@ -55,7 +55,7 @@ def write_result(setup, result):
             for rep in REPS:
 
 
-                command = 'ab -n %(GETS)s -c %(conc)s http://localhost:8000/' % locals()
+                command = 'ab -n %(GETS)s -c %(conc)s http://127.0.0.1:8000/' % locals()
                 ab = subprocess.Popen(command.split(), stdout=subprocess.PIPE)
                 ab.wait()
                 result = ab.stdout.read()
diff --git a/setup.py b/setup.py
index 625230f..631da55 100644
--- a/setup.py
+++ b/setup.py
@@ -1,11 +1,17 @@
 from setuptools import setup
 
+is_pypy = hasattr(sys, 'pypy_version_info')
+
+extras = []
+if not is_pypy: 
+   extras.extend(['gevent>1.0b1', 'cython'])
+
 setup(
         name='webbench',
         version='0.0.1',
         install_requires=['tornado', 'twisted', 'cyclone',
             'flask', 'bottle', 'bottle-redis', 'redis',
             'rocket', 'paste'
-            ],
+            ] + extras,
 )