diff --git a/setup.py b/setup.py
index 6bc0af56..32515155 100644
--- a/setup.py
+++ b/setup.py
@@ -19,5 +19,5 @@ import setuptools
 
 
 setuptools.setup(
-    setup_requires=['pbr>=0.5.21,<1.0'],
-    d2to1=True)
+    setup_requires=['pbr'],
+    pbr=True)