diff --git a/setup.py b/setup.py
index 5935c6b..4e14078 100644
--- a/setup.py
+++ b/setup.py
@@ -5,5 +5,6 @@
 import setuptools
 
 setuptools.setup(
-    setup_requires=['pbr'],
+    setup_requires=['pbr>=2.0.0'],
+    py_modules=[],
     pbr=True)