diff --git a/setup.py b/setup.py
index cf2a404d2..4fc4d45f0 100644
--- a/setup.py
+++ b/setup.py
@@ -26,5 +26,5 @@
 
 ryu.hooks.save_orig()
 setuptools.setup(name='ryu',
-                 setup_requires=['pbr'],
+                 setup_requires=['pbr<1.0'],
                  pbr=True)