diff --git a/requirements.txt b/requirements.txt
index 0f91adb..c50f2f5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-pbr>=0.5.21,<1.0
+pbr>=0.6,<1.0
 anyjson>=0.3.3
 eventlet>=0.13.0