diff --git a/tox.ini b/tox.ini
index 789a911942..b6c716bc19 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,10 @@ setenv = VIRTUAL_ENV={envdir}
          PYTHONWARNINGS=default::DeprecationWarning
          TESTS_DIR=./ironic/tests/unit/
 deps = -r{toxinidir}/test-requirements.txt
-commands = ostestr {posargs}
+whitelist_externals = rm
+commands =
+    rm -f .testrepository/times.dbm
+    ostestr {posargs}
 passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 
 [testenv:unit-with-driver-libs]