diff --git a/requirements.txt b/requirements.txt
index 63711aba3c..649bd59f21 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,4 +9,12 @@ PrettyTable<0.8,>=0.7.1 # BSD
 python-memcached>=1.56 # PSF
 PyYAML>=3.12 # MIT
 virtualenv>=14.0.6 # MIT
+
+# We use this for our own keystone module.
+# TODO(odyssey4me): Remove this once we no
+# longer use our own keystone module.
+python-keystoneclient!=2.1.0  # Apache-2.0
+
+# We use this for the Ansible openstack
+# modules.
 shade>=1.17.0 # Apache-2.0