diff --git a/tox.ini b/tox.ini
index 7e4beb99a8f..07c7e66bf1d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,10 @@ skipsdist = True
 envlist = py26,py27,py33,pep8
 
 [testenv]
+# Note the hash seed is set to 0 until cinder can be tested with a
+# random hash seed successfully.
 setenv = VIRTUAL_ENV={envdir}
+         PYTHONHASHSEED=0
 usedevelop = True
 install_command = pip install {opts} {packages}
 
@@ -26,7 +29,6 @@ commands =
   bash -c "find cinder -type f -regex '.*\.pot?' -print0|xargs -0 -n 1 msgfmt --check-format -o /dev/null"
 
 [testenv:pylint]
-setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/requirements.txt
        pylint==0.26.0
 commands = bash tools/lintstack.sh
@@ -34,7 +36,6 @@ commands = bash tools/lintstack.sh
 [testenv:cover]
 # Also do not run test_coverage_ext tests while gathering coverage as those
 # tests conflict with coverage.
-setenv = VIRTUAL_ENV={envdir}
 commands =
   python setup.py testr --coverage \
     --testr-args='^(?!.*test.*coverage).*$'