diff --git a/tox.ini b/tox.ini
index 89bf238e..4175a5f8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,8 +11,9 @@ setenv =
    BRANCH_NAME=master
    CLIENT_NAME=os-win
 deps = -r{toxinidir}/test-requirements.txt
-commands = python setup.py test --slowest --testr-args='{posargs}'
-
+commands = rm -f .testrepository/times.dbm
+           python setup.py test --slowest --testr-args='{posargs}'
+           
 [testenv:pep8]
 commands = flake8
 
@@ -21,7 +22,7 @@ commands = {posargs}
 
 [testenv:cover]
 commands = python setup.py test --coverage --testr-args='{posargs}'
-
+           
 [testenv:docs]
 commands = python setup.py build_sphinx