diff --git a/neutron_tempest_plugin/api/test_security_groups.py b/neutron_tempest_plugin/api/test_security_groups.py
index 94b6dbf..0970d83 100644
--- a/neutron_tempest_plugin/api/test_security_groups.py
+++ b/neutron_tempest_plugin/api/test_security_groups.py
@@ -240,12 +240,14 @@
 
     def _create_security_group_rules(self, amount, port_index=1):
         for i in range(amount):
-            self.create_security_group_rule(**{
+            ingress_rule = self.create_security_group_rule(**{
                 'project_id': self.client.tenant_id,
                 'direction': 'ingress',
                 'port_range_max': port_index + i,
                 'port_range_min': port_index + i,
                 'protocol': 'tcp'})
+            self.addCleanup(
+                self.client.delete_security_group_rule, ingress_rule['id'])
 
     def _increase_sg_rules_quota(self):
         sg_rules_quota = self._get_sg_rules_quota()
diff --git a/tox.ini b/tox.ini
index d3e722a..ff50b9d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 3.1
+minversion = 3.18.0
 envlist = pep8
 skipsdist = True
 ignore_basepython_conflict = True
@@ -22,7 +22,7 @@
 commands =
   sh ./tools/misc-sanity-checks.sh
   flake8
-whitelist_externals =
+allowlist_externals =
   sh
 
 [testenv:venv]