diff --git a/requirements.txt b/requirements.txt
index 368e36012..f487390f3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ keystonemiddleware!=4.1.0,!=4.5.0,>=4.0.0 # Apache-2.0
 oslo.concurrency>=3.8.0 # Apache-2.0
 oslo.cache>=1.5.0 # Apache-2.0
 oslo.config>=3.14.0 # Apache-2.0
-oslo.context>=2.6.0 # Apache-2.0
+oslo.context>=2.9.0 # Apache-2.0
 oslo.db>=4.10.0 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 oslo.log>=1.14.0 # Apache-2.0
@@ -22,12 +22,12 @@ oslo.service>=1.10.0 # Apache-2.0
 oslo.utils>=3.16.0 # Apache-2.0
 PasteDeploy>=1.5.0 # MIT
 pbr>=1.6 # Apache-2.0
-pecan>=1.0.0 # BSD
+pecan!=1.0.2,!=1.0.3,!=1.0.4,>=1.0.0 # BSD
 PrettyTable<0.8,>=0.7 # BSD
 voluptuous>=0.8.9 # BSD License
 python-ceilometerclient>=2.5.0 # Apache-2.0
 python-cinderclient!=1.7.0,!=1.7.1,>=1.6.0 # Apache-2.0
-python-glanceclient>=2.0.0 # Apache-2.0
+python-glanceclient!=2.4.0,>=2.0.0 # Apache-2.0
 python-keystoneclient!=2.1.0,>=2.0.0 # Apache-2.0
 python-neutronclient>=5.1.0 # Apache-2.0
 python-novaclient!=2.33.0,>=2.29.0 # Apache-2.0