diff --git a/setup.cfg b/setup.cfg
index 420182e..7529089 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -28,24 +28,11 @@ classifier =
         Topic :: Internet :: WWW/HTTP :: WSGI
         Topic :: Software Development :: Libraries :: Python Modules
 
-requires = 
-    six
-    simplegeneric
-
 [entry_points]
 wsme.protocols =
     restjson = wsme.protocols.restjson:RestJsonProtocol
     restxml = wsme.protocols.restxml:RestXmlProtocol
 
-[metadata:python_version == '2.5']
-requires = WebOb <= 1.1.1
-
-[metadata:python_version == '2.6' or python_version == '2.7']
-requires = WebOb
-
-[metadata:python_version != '2.5' and python_version != '2.6' and python_version != '2.7']
-requires = WebOb >= 1.2b3
-
 [files]
 packages =
     wsme
diff --git a/setup.py b/setup.py
index 7b26f9d..0773bbd 100644
--- a/setup.py
+++ b/setup.py
@@ -1,2 +1,19 @@
 from setuptools import setup
-setup(setup_requires=['d2to1'], d2to1=True)
+import sys
+
+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 = ''
+
+setup(
+    setup_requires=['d2to1'],
+    install_requires=[
+        'six',
+        'simplegeneric',
+        'WebOb' + webob_version
+    ],
+    d2to1=True
+)