diff --git a/tox.ini b/tox.ini
index a8416d78d..371b70fef 100644
--- a/tox.ini
+++ b/tox.ini
@@ -58,55 +58,60 @@ commands = {posargs}
 [testenv:py33]
 deps = -r{toxinidir}/requirements-py3.txt
        -r{toxinidir}/test-requirements-py3.txt
-       nose
 setenv = PYTHONHASHSEED=0
 commands =
   python -m openstack.common.lockutils \
-  nosetests tests/unit/apiclient/ \
-            tests/unit/cache/ \
-            tests/unit/config/test_generator.py \
-            tests/unit/crypto/test_utils.py \
-            tests/unit/db/sqlalchemy/test_models.py \
-            tests/unit/db/sqlalchemy/test_options.py \
-            tests/unit/db/test_api.py \
-            tests/unit/fixture/test_config.py \
-            tests/unit/fixture/test_mockpatch.py \
-            tests/unit/middleware/test_catch_errors.py \
-            tests/unit/middleware/test_correlation_id.py \
-            tests/unit/middleware/test_notifier.py \
-            tests/unit/middleware/test_request_id.py \
-            tests/unit/middleware/test_sizelimit.py \
-            tests/unit/reports/test_base_report.py \
-            tests/unit/reports/test_guru_meditation_report.py \
-            tests/unit/reports/test_openstack_generators.py \
-            tests/unit/reports/test_views.py \
-            tests/unit/rpc/test_dispatcher.py \
-            tests/unit/scheduler/test_base_filter.py \
-            tests/unit/scheduler/test_host_filters.py \
-            tests/unit/scheduler/test_weights.py \
-            tests/unit/test_cfgfilter.py \
-            tests/unit/test_context.py \
-            tests/unit/test_deprecated.py \
-            tests/unit/test_excutils.py \
-            tests/unit/test_funcutils.py \
-            tests/unit/test_hooks.py \
-            tests/unit/test_importutils.py \
-            tests/unit/test_jsonutils.py \
-            tests/unit/test_local.py \
-            tests/unit/test_memorycache.py \
-            tests/unit/test_network_utils.py \
-            tests/unit/test_notifier.py \
-            tests/unit/test_periodic.py \
-            tests/unit/test_policy.py \
-            tests/unit/test_quota.py \
-            tests/unit/test_request_utils.py \
-            tests/unit/test_sslutils.py \
-            tests/unit/test_systemd.py \
-            tests/unit/test_timeutils.py \
-            tests/unit/test_units.py \
-            tests/unit/test_uuidutils.py \
-            tests/unit/test_versionutils.py \
-            tests/unit/test_xmlutils.py
+      python -m testtools.run \
+            tests.unit.apiclient.test_auth \
+            tests.unit.apiclient.test_base \
+            tests.unit.apiclient.test_client \
+            tests.unit.apiclient.test_exceptions \
+            tests.unit.cache.test_cache \
+            tests.unit.cache.test_memory \
+            tests.unit.config.test_generator \
+            tests.unit.crypto.test_utils \
+            tests.unit.db.sqlalchemy.test_models \
+            tests.unit.db.sqlalchemy.test_options \
+            tests.unit.db.test_api \
+            tests.unit.fixture.test_config \
+            tests.unit.fixture.test_logging \
+            tests.unit.fixture.test_mockpatch \
+            tests.unit.middleware.test_catch_errors \
+            tests.unit.middleware.test_correlation_id \
+            tests.unit.middleware.test_notifier \
+            tests.unit.middleware.test_request_id \
+            tests.unit.middleware.test_sizelimit \
+            tests.unit.reports.test_base_report \
+            tests.unit.reports.test_guru_meditation_report \
+            tests.unit.reports.test_openstack_generators \
+            tests.unit.reports.test_views \
+            tests.unit.rpc.test_dispatcher \
+            tests.unit.scheduler.test_base_filter \
+            tests.unit.scheduler.test_host_filters \
+            tests.unit.scheduler.test_weights \
+            tests.unit.test_cfgfilter \
+            tests.unit.test_context \
+            tests.unit.test_deprecated \
+            tests.unit.test_excutils \
+            tests.unit.test_funcutils \
+            tests.unit.test_hooks \
+            tests.unit.test_importutils \
+            tests.unit.test_jsonutils \
+            tests.unit.test_local \
+            tests.unit.test_memorycache \
+            tests.unit.test_network_utils \
+            tests.unit.test_notifier \
+            tests.unit.test_periodic \
+            tests.unit.test_policy \
+            tests.unit.test_quota \
+            tests.unit.test_request_utils \
+            tests.unit.test_sslutils \
+            tests.unit.test_systemd \
+            tests.unit.test_timeutils \
+            tests.unit.test_units \
+            tests.unit.test_uuidutils \
+            tests.unit.test_versionutils \
+            tests.unit.test_xmlutils
 
 [testenv:pyflakes]
 commands = flake8