diff --git a/test-requirements.txt b/test-requirements.txt
index d944e4e9..0f505b4c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,7 +5,6 @@ bandit>=1.1.0 # Apache-2.0
 flake8<2.6.0,>=2.5.4 # MIT
 hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 coverage>=4.0 # Apache-2.0
-nose # LGPL
 mock>=2.0 # BSD
 oslotest>=1.10.0 # Apache-2.0
 os-testr>=0.8.0 # Apache-2.0
diff --git a/tox.ini b/tox.ini
index 3f75b13a..b99a4856 100644
--- a/tox.ini
+++ b/tox.ini
@@ -24,6 +24,7 @@ deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands =
   find {toxinidir} -type f -name "*.py[c|o]" -delete
+  rm -Rf .testrepository/times.dbm
 
 [testenv:py27]
 basepython = python2.7