diff --git a/tox.ini b/tox.ini
index b2e96a29..411bb4b4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,9 @@ setenv =
 deps =
     -r{toxinidir}/test-requirements.txt
     -egit+https://git.openstack.org/openstack/neutron@master#egg=neutron
-commands = python setup.py testr --slowest --testr-args='{posargs}'
+commands =
+    rm -Rf .testrepository/times.dbm
+    python setup.py testr --slowest --testr-args='{posargs}'
 whitelist_externals = rm
 
 [testenv:releasenotes]