diff --git a/tox.ini b/tox.ini
index 493363ecf9..77289e700f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,10 @@ envlist = py26,py27,py33,pep8
 skipsdist = True
 
 [testenv]
+# Note the hash seed is set to 0 until glance can be tested with a
+# random hash seed successfully.
 setenv = VIRTUAL_ENV={envdir}
+         PYTHONHASHSEED=0
 usedevelop = True
 install_command = pip install --allow-all-external --allow-insecure netaddr -U {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
@@ -20,7 +23,6 @@ commands =
   flake8 {posargs}
 
 [testenv:cover]
-setenv = VIRTUAL_ENV={envdir}
 commands = python setup.py testr --coverage --testr-args='^(?!.*test.*coverage).*$'
 
 [testenv:venv]