diff --git a/requirements.txt b/requirements.txt
index 78246c6a..07b8935f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,9 +4,9 @@
 pbr>=1.6
 argparse
 PrettyTable<0.8,>=0.7
-requests>=2.5.2
+requests!=2.8.0,>=2.5.2
 simplejson>=2.2.0
-oslo.utils>=2.0.0 # Apache-2.0
-python-keystoneclient>=1.6.0
+oslo.utils>=2.4.0 # Apache-2.0
+python-keystoneclient!=1.8.0,>=1.6.0
 Babel>=1.3
 six>=1.9.0