diff --git a/requirements.txt b/requirements.txt
index 2ce1d0a0..053a319c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,13 +2,13 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 argparse
-pbr>=0.6,!=0.7,<1.0
+pbr>=0.11,<2.0
 Babel>=1.3
-oslo.config>=1.9.3  # Apache-2.0
+oslo.config>=1.11.0  # Apache-2.0
 oslo.utils>=1.4.0                       # Apache-2.0
 iso8601>=0.1.9
-requests>=2.2.0,!=2.4.0
-python-keystoneclient>=1.1.0
+requests>=2.5.2
+python-keystoneclient>=1.3.0
 PyYAML>=3.1.0
 stevedore>=1.3.0  # Apache-2.0
 six>=1.9.0