diff --git a/requirements.txt b/requirements.txt
index c3f86909dc..eaa887f549 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 # pbr should be first
-pbr<2.0,>=1.4
+pbr<2.0,>=1.6
 
 alembic>=0.8.0
 Babel>=1.3
@@ -13,13 +13,13 @@ httplib2>=0.7.5
 iso8601>=0.1.9
 lxml>=2.3
 netaddr>=0.7.12
-oslo.config>=2.1.0 # Apache-2.0
+oslo.config>=2.3.0 # Apache-2.0
 oslo.context>=0.2.0 # Apache-2.0
 oslo.db>=2.4.1 # Apache-2.0
 oslo.i18n>=1.5.0 # Apache-2.0
 oslo.log>=1.8.0 # Apache-2.0
 oslo.messaging!=1.17.0,!=1.17.1,>=1.16.0 # Apache-2.0
-oslo.middleware!=2.6.0,>=2.4.0 # Apache-2.0
+oslo.middleware>=2.6.1 # Apache-2.0
 oslo.policy>=0.5.0 # Apache-2.0
 oslo.rootwrap>=2.0.0 # Apache-2.0
 oslo.serialization>=1.4.0 # Apache-2.0