diff --git a/ironic/tests/unit/common/test_keystone.py b/ironic/tests/unit/common/test_keystone.py
index 5f38c9f26c..93febd00e7 100644
--- a/ironic/tests/unit/common/test_keystone.py
+++ b/ironic/tests/unit/common/test_keystone.py
@@ -95,10 +95,9 @@ class KeystoneTestCase(base.TestCase):
     @mock.patch.object(keystone, '_get_legacy_auth', return_value=None)
     @mock.patch.object(ironic_auth, 'load_auth', return_value=None)
     def test_get_session_fail(self, auth_get_mock, legacy_get_mock):
-        self.assertRaisesRegexp(
-            exception.KeystoneFailure,
-            "Failed to load auth from either",
-            keystone.get_session, self.test_group)
+        self.assertRaisesRegex(exception.KeystoneFailure,
+                               "Failed to load auth from either",
+                               keystone.get_session, self.test_group)
 
     @mock.patch('keystoneauth1.loading.load_auth_from_conf_options')
     @mock.patch('ironic.common.keystone._get_legacy_auth')
diff --git a/ironic/tests/unit/db/test_nodes.py b/ironic/tests/unit/db/test_nodes.py
index 2c52dbeaa5..5f975b2f2a 100644
--- a/ironic/tests/unit/db/test_nodes.py
+++ b/ironic/tests/unit/db/test_nodes.py
@@ -632,10 +632,10 @@ class DbNodeTestCase(base.DbTestCase):
                                node_id=node.id,
                                address='aa:bb:cc:dd:ee:ff')
 
-        self.assertRaisesRegexp(exception.NodeNotFound,
-                                'was not found',
-                                self.dbapi.get_node_by_port_addresses,
-                                ['11:22:33:44:55:66'])
+        self.assertRaisesRegex(exception.NodeNotFound,
+                               'was not found',
+                               self.dbapi.get_node_by_port_addresses,
+                               ['11:22:33:44:55:66'])
 
     def test_get_node_by_port_addresses_multiple_found(self):
         node1 = utils.create_test_node(
@@ -652,7 +652,7 @@ class DbNodeTestCase(base.DbTestCase):
                                node_id=node2.id,
                                address=addresses[1])
 
-        self.assertRaisesRegexp(exception.NodeNotFound,
-                                'Multiple nodes',
-                                self.dbapi.get_node_by_port_addresses,
-                                addresses)
+        self.assertRaisesRegex(exception.NodeNotFound,
+                               'Multiple nodes',
+                               self.dbapi.get_node_by_port_addresses,
+                               addresses)
diff --git a/ironic/tests/unit/drivers/modules/network/test_common.py b/ironic/tests/unit/drivers/modules/network/test_common.py
index 0f75ca0f68..c43b00a73c 100644
--- a/ironic/tests/unit/drivers/modules/network/test_common.py
+++ b/ironic/tests/unit/drivers/modules/network/test_common.py
@@ -372,7 +372,7 @@ class TestVifPortIDMixin(db_base.DbTestCase):
         mock_upa.side_effect = (
             exception.FailedToUpdateMacOnPort(port_id='fake'))
         with task_manager.acquire(self.context, self.node.id) as task:
-            self.assertRaisesRegexp(
+            self.assertRaisesRegex(
                 exception.NetworkError, "can not update Neutron port",
                 self.interface.vif_attach, task, vif)
             mock_client.assert_called_once_with()
@@ -447,7 +447,7 @@ class TestVifPortIDMixin(db_base.DbTestCase):
 
     def test_vif_detach_not_attached(self):
         with task_manager.acquire(self.context, self.node.id) as task:
-            self.assertRaisesRegexp(
+            self.assertRaisesRegex(
                 exception.VifNotAttached, "it is not attached to it.",
                 self.interface.vif_detach, task, 'aaa')
 
diff --git a/ironic/tests/unit/drivers/modules/network/test_neutron.py b/ironic/tests/unit/drivers/modules/network/test_neutron.py
index f343f86e7f..e4cee72d4d 100644
--- a/ironic/tests/unit/drivers/modules/network/test_neutron.py
+++ b/ironic/tests/unit/drivers/modules/network/test_neutron.py
@@ -226,7 +226,7 @@ class NeutronInterfaceTestCase(db_base.DbTestCase):
         n = utils.create_test_node(self.context, network_interface='neutron',
                                    uuid=uuidutils.generate_uuid())
         with task_manager.acquire(self.context, n.id) as task:
-            self.assertRaisesRegexp(
+            self.assertRaisesRegex(
                 exception.NetworkError, 'No ports are associated',
                 self.interface.configure_tenant_networks, task)
 
@@ -277,7 +277,7 @@ class NeutronInterfaceTestCase(db_base.DbTestCase):
         client.update_port.side_effect = neutron_exceptions.ConnectionFailed(
             reason='meow')
         with task_manager.acquire(self.context, self.node.id) as task:
-            self.assertRaisesRegexp(
+            self.assertRaisesRegex(
                 exception.NetworkError, 'Could not add',
                 self.interface.configure_tenant_networks, task)
             client_mock.assert_called_once_with()