diff --git a/requirements.txt b/requirements.txt
index 414f489..84e91af 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-pbr<2.0.0,>=1.8 # Apache-2.0
+pbr>=1.8 # Apache-2.0
 Jinja2!=2.9.0,!=2.9.1,!=2.9.2,!=2.9.3,!=2.9.4,>=2.8 # BSD License (3 clause)
 oslo.serialization>=1.10.0 # Apache-2.0
 psutil>=3.0.1 # BSD