diff --git a/.gitignore b/.gitignore
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@
 dist/
 version.txt
 /.hypothesis/
+/.tox/
diff --git a/requirements-test.txt b/requirements-test.txt
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,3 +1,3 @@
 hypothesis
-nose
+pytest
 celery
diff --git a/swh/scheduler/tests/test_scheduler.py b/swh/scheduler/tests/test_scheduler.py
--- a/swh/scheduler/tests/test_scheduler.py
+++ b/swh/scheduler/tests/test_scheduler.py
@@ -13,7 +13,7 @@
 
 import psycopg2
 from arrow import utcnow
-from nose.plugins.attrib import attr
+import pytest
 
 from swh.core.tests.db_testing import SingleDbTestFixture
 from swh.scheduler import get_scheduler
@@ -21,7 +21,7 @@
 from . import SQL_DIR
 
 
-@attr('db')
+@pytest.mark.db
 class CommonSchedulerTest(SingleDbTestFixture):
     TEST_DB_NAME = 'softwareheritage-scheduler-test'
     TEST_DB_DUMP = os.path.join(SQL_DIR, '*.sql')
diff --git a/swh/scheduler/tests/updater/test_backend.py b/swh/scheduler/tests/updater/test_backend.py
--- a/swh/scheduler/tests/updater/test_backend.py
+++ b/swh/scheduler/tests/updater/test_backend.py
@@ -9,7 +9,7 @@
 from arrow import utcnow
 from hypothesis import given
 from hypothesis.strategies import sets
-from nose.plugins.attrib import attr
+import pytest
 
 from swh.core.tests.db_testing import SingleDbTestFixture
 from swh.scheduler.tests import SQL_DIR
@@ -19,7 +19,7 @@
 from . import from_regex
 
 
-@attr('db')
+@pytest.mark.db
 class SchedulerUpdaterBackendTest(SingleDbTestFixture, unittest.TestCase):
     TEST_DB_NAME = 'softwareheritage-scheduler-updater-test'
     TEST_DB_DUMP = os.path.join(SQL_DIR, 'updater', '*.sql')
diff --git a/swh/scheduler/tests/updater/test_writer.py b/swh/scheduler/tests/updater/test_writer.py
--- a/swh/scheduler/tests/updater/test_writer.py
+++ b/swh/scheduler/tests/updater/test_writer.py
@@ -7,7 +7,7 @@
 import unittest
 from glob import glob
 
-from nose.plugins.attrib import attr
+import pytest
 
 from swh.core.utils import numfile_sortkey as sortkey
 from swh.core.tests.db_testing import DbTestFixture
@@ -18,7 +18,7 @@
 from . import UpdaterTestUtil
 
 
-@attr('db')
+@pytest.mark.db
 class CommonSchedulerTest(DbTestFixture):
     TEST_SCHED_DB = 'softwareheritage-scheduler-test'
     TEST_SCHED_DUMP = os.path.join(SQL_DIR, '*.sql')
@@ -134,14 +134,14 @@
         r = self.scheduler_backend.peek_ready_tasks(
             'origin-update-git')
 
-        self.assertEquals(len(r), expected_length)
+        self.assertEqual(len(r), expected_length)
 
         # Check the task has been scheduled
         for t in r:
-            self.assertEquals(t['type'], 'origin-update-git')
-            self.assertEquals(t['priority'], 'normal')
-            self.assertEquals(t['policy'], 'oneshot')
-            self.assertEquals(t['status'], 'next_run_not_scheduled')
+            self.assertEqual(t['type'], 'origin-update-git')
+            self.assertEqual(t['priority'], 'normal')
+            self.assertEqual(t['policy'], 'oneshot')
+            self.assertEqual(t['status'], 'next_run_not_scheduled')
 
         # writer has nothing to do now
         self.writer.run()
@@ -155,4 +155,4 @@
         r = self.scheduler_backend.peek_ready_tasks(
             'origin-update-git')
 
-        self.assertEquals(len(r), expected_length)
+        self.assertEqual(len(r), expected_length)
diff --git a/swh/scheduler/updater/consumer.py b/swh/scheduler/updater/consumer.py
--- a/swh/scheduler/updater/consumer.py
+++ b/swh/scheduler/updater/consumer.py
@@ -119,7 +119,7 @@
                 for _event in self.consume_events():
                     event = self.convert_event(_event)
                     if not event:
-                        self.log.warn(
+                        self.log.warning(
                             'Incomplete event dropped %s' % _event)
                         continue
                     if not self.is_interesting(event):
diff --git a/swh/scheduler/updater/writer.py b/swh/scheduler/updater/writer.py
--- a/swh/scheduler/updater/writer.py
+++ b/swh/scheduler/updater/writer.py
@@ -74,7 +74,7 @@
                 'origin-update-git',
                 event['url'],
                 priority='normal')
-        self.log.warn('Type %s is not supported for now, only git' % (
+        self.log.warning('Type %s is not supported for now, only git' % (
             event['origin_type'], ))
         return None
 
diff --git a/tox.ini b/tox.ini
new file mode 100644
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,17 @@
+[tox]
+envlist=flake8,py3
+
+[testenv:py3]
+deps =
+  .[testing]
+  pytest-cov
+  pifpaf
+commands =
+  pifpaf run postgresql -- pytest --cov=swh --cov-branch {posargs}
+
+[testenv:flake8]
+skip_install = true
+deps =
+  flake8
+commands =
+  {envpython} -m flake8