diff --git a/setup.py b/setup.py
index fd54577..157c699 100644
--- a/setup.py
+++ b/setup.py
@@ -35,8 +35,8 @@ setup(
     install_requires=requires,
     extras_require={
         ':python_version=="2.6"': ['argparse', 'ordereddict'],
-        ':python_version<="2.7"': ['ipaddr>=2.1', 'configparser', 'werkzeug>=0.8'],
-        ':python_version>="3.0"': ['werkzeug>=0.9']
+        ':python_version=="2.6" or python_version=="2.7"': ['ipaddr>=2.1', 'configparser', 'werkzeug>=0.8'],
+        ':python_version!="2.6" and python_version!="2.7"': ['werkzeug>=0.9']
     },
     entry_points={
         'console_scripts':