diff --git a/requirements.txt b/requirements.txt
index d475532..4d60d8b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,12 +1,9 @@
-# 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>=0.11,<2.0
+pbr>=0.6,!=0.7,<1.0
 
 # never put a cap on this, *ever*, sqla versions are handled via
 # tox, and if SQLA is capped it will only make it so we aren't testing
 # against all the versions we are compatible with.
-SQLAlchemy>=0.7.8,!=0.9.5
+SQLAlchemy>=0.7.8,!=0.9.5,<=1.0.99
 decorator
 six>=1.7.0
 sqlparse