diff --git a/requirements.txt b/requirements.txt
index 369963276..3dfbb239e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # 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
 Babel>=2.3.4 # BSD
 SQLAlchemy<1.1.0,>=1.0.10 # MIT
 stevedore>=1.17.1 # Apache-2.0