diff --git a/setup.py b/setup.py
index 474b6c8..0a62827 100644
--- a/setup.py
+++ b/setup.py
@@ -20,11 +20,13 @@ kwargs = {'name': 'Glymur',
           'license': 'MIT',
           'test_suite': 'glymur.test'}
 
-instllrqrs = ['numpy>=1.4.1', 'lxml>=2.3.2']
+install_requires = ['numpy>=1.7.0', 'lxml>=3.0.0']
+test_requires = ['six>=1.7.0']
 if sys.hexversion < 0x03030000:
-    instllrqrs.append('contextlib2>=0.4')
-    instllrqrs.append('mock>=1.0.1')
-kwargs['install_requires'] = instllrqrs
+    install_requires.append('contextlib2>=0.4')
+    test_requires.append('mock>=1.0.1')
+kwargs['install_requires'] = install_requires
+kwargs['test_requires'] = test_requires
 
 clssfrs = ["Programming Language :: Python",
            "Programming Language :: Python :: 2.7",