diff --git a/requirements-py3.txt b/requirements-py3.txt
new file mode 100644
index 0000000..295c61e
--- /dev/null
+++ b/requirements-py3.txt
@@ -0,0 +1,3 @@
+six>=1.9.0
+WebOb>=1.2.3
+simplegeneric
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..b4112a0
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,4 @@
+six>=1.9.0
+WebOb>=1.2.3
+simplegeneric
+ipaddr
diff --git a/setup.py b/setup.py
index 1fbb3bf..a92d122 100644
--- a/setup.py
+++ b/setup.py
@@ -1,27 +1,6 @@
-from setuptools import setup
-import sys
+import setuptools
 
-if sys.version_info[:2] <= (2, 5):
-    webob_version = ' <= 1.1.1'
-elif sys.version_info[:2] >= (3, 0):
-    webob_version = ' >= 1.2.2'
-else:
-    webob_version = ''
-
-install_requires = [
-    'six',
-    'simplegeneric',
-    'WebOb' + webob_version
-]
-
-if sys.version_info[:2] <= (2, 6):
-    install_requires += ('ordereddict',)
-
-if sys.version_info[:2] < (3, 3):
-    install_requires += ('ipaddr',)
-
-setup(
-    setup_requires=['pbr>=0.5.21'],
-    install_requires=install_requires,
+setuptools.setup(
+    setup_requires=['pbr'],
     pbr=True
 )