diff --git a/tox.ini b/tox.ini
index a5e702ceb..907c2a008 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,7 @@ skipsdist = True
 [testenv]
 usedevelop = True
 whitelist_externals = find
+                      rm
 install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}