diff --git a/requirements.txt b/requirements.txt
index e835fae..c497d3a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,10 +5,10 @@ pbr>=1.8 # Apache-2.0
 
 anyjson>=0.3.3 # BSD
 eventlet!=0.18.3,>=0.18.2 # MIT
-python-keystoneclient>=3.6.0 # Apache-2.0
-python-heatclient>=1.5.0 # Apache-2.0
+python-keystoneclient>=3.8.0 # Apache-2.0
+python-heatclient>=1.6.1 # Apache-2.0
 python-zaqarclient>=1.0.0 # Apache-2.0
-requests>=2.10.0 # Apache-2.0
+requests!=2.12.2,>=2.10.0 # Apache-2.0
 iso8601>=0.1.11 # MIT
 lxml>=2.3 # BSD
 oslo.config!=3.18.0,>=3.14.0 # Apache-2.0