diff --git a/.gitignore b/.gitignore
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@
 build/
 dist/
 version.txt
+.tox/
diff --git a/requirements-test.txt b/requirements-test.txt
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1 +1 @@
-nose
+pytest
diff --git a/swh/loader/core/tests/__init__.py b/swh/loader/core/tests/__init__.py
--- a/swh/loader/core/tests/__init__.py
+++ b/swh/loader/core/tests/__init__.py
@@ -4,17 +4,17 @@
 # See top-level LICENSE file for more information
 
 import os
+import pytest
 import shutil
 import subprocess
 import tempfile
 
 from unittest import TestCase
-from nose.plugins.attrib import attr
 
 from swh.model import hashutil
 
 
-@attr('fs')
+@pytest.mark.fs
 class BaseLoaderTest(TestCase):
     """Mixin base loader test class.
 
diff --git a/swh/loader/core/tests/test_loader.py b/swh/loader/core/tests/test_loader.py
--- a/swh/loader/core/tests/test_loader.py
+++ b/swh/loader/core/tests/test_loader.py
@@ -39,14 +39,14 @@
         self.loader.maybe_load_revisions(self.in_revisions)
         self.loader.maybe_load_releases(self.in_releases)
 
-        self.assertEquals(len(self.state('content')), 0)
-        self.assertEquals(
+        self.assertEqual(len(self.state('content')), 0)
+        self.assertEqual(
             len(self.state('directory')), len(self.in_directories))
-        self.assertEquals(
+        self.assertEqual(
             len(self.state('revision')), len(self.in_revisions))
-        self.assertEquals(
+        self.assertEqual(
             len(self.state('release')), len(self.in_releases))
-        self.assertEquals(len(self.state('snapshot')), 0)
+        self.assertEqual(len(self.state('snapshot')), 0)
 
     def test_stateless_loader(self):
         """Stateless loader accumulates in place the sent data as well
@@ -58,11 +58,11 @@
         self.loader.send_batch_contents(self.in_contents)
         self.loader.send_snapshot(self.in_snapshot)
 
-        self.assertEquals(len(self.state('content')), len(self.in_contents))
-        self.assertEquals(len(self.state('directory')), 0)
-        self.assertEquals(len(self.state('revision')), 0)
-        self.assertEquals(len(self.state('release')), 0)
-        self.assertEquals(len(self.state('snapshot')), 1)
+        self.assertEqual(len(self.state('content')), len(self.in_contents))
+        self.assertEqual(len(self.state('directory')), 0)
+        self.assertEqual(len(self.state('revision')), 0)
+        self.assertEqual(len(self.state('release')), 0)
+        self.assertEqual(len(self.state('snapshot')), 1)
 
 
 class LoadTestContent(DummyBaseLoaderTest):
diff --git a/swh/loader/core/tests/test_queue.py b/swh/loader/core/tests/test_queue.py
--- a/swh/loader/core/tests/test_queue.py
+++ b/swh/loader/core/tests/test_queue.py
@@ -22,21 +22,21 @@
 
         # pop returns the content and reset the queue
         actual_elements = queue.pop()
-        self.assertEquals(actual_elements, elements)
-        self.assertEquals(queue.pop(), [])
+        self.assertEqual(actual_elements, elements)
+        self.assertEqual(queue.pop(), [])
 
         # duplicates can be integrated
         new_elements = [1, 1, 3, 4, 9, 20, 30, 40, 12, 14, 2]
         actual_threshold = queue.add(new_elements)
 
         self.assertTrue(actual_threshold)
-        self.assertEquals(queue.pop(), new_elements)
+        self.assertEqual(queue.pop(), new_elements)
 
         # reset is destructive too
         queue.add(new_elements)
         queue.reset()
 
-        self.assertEquals(queue.pop(), [])
+        self.assertEqual(queue.pop(), [])
 
 
 def to_some_objects(elements, key):
@@ -58,9 +58,9 @@
 
         # pop returns the content and reset the queue
         actual_elements = queue.pop()
-        self.assertEquals(actual_elements,
-                          [{'id': 1}, {'id': 3}, {'id': 4}, {'id': 9}])
-        self.assertEquals(queue.pop(), [])
+        self.assertEqual(actual_elements,
+                         [{'id': 1}, {'id': 3}, {'id': 4}, {'id': 9}])
+        self.assertEqual(queue.pop(), [])
 
         new_elements = list(to_some_objects(
             [1, 3, 4, 9, 20],
@@ -73,7 +73,7 @@
         queue.add(new_elements)
         queue.reset()
 
-        self.assertEquals(queue.pop(), [])
+        self.assertEqual(queue.pop(), [])
 
 
 def to_some_complex_objects(elements, key):
@@ -102,12 +102,12 @@
 
         # pop returns the content and reset the queue
         actual_elements = queue.pop()
-        self.assertEquals(actual_elements,
-                          [{'k': 1, 'length': 10},
-                           {'k': 2, 'length': 20},
-                           {'k': 3, 'length': 30},
-                           {'k': 4, 'length': 100}])
-        self.assertEquals(queue.pop(), [])
+        self.assertEqual(actual_elements,
+                         [{'k': 1, 'length': 10},
+                          {'k': 2, 'length': 20},
+                          {'k': 3, 'length': 30},
+                          {'k': 4, 'length': 100}])
+        self.assertEqual(queue.pop(), [])
 
         # size threshold not reached, nb elements reached, the
         # threshold is considered reached
@@ -133,4 +133,4 @@
         queue.add(new_elements)
         queue.reset()
 
-        self.assertEquals(queue.pop(), [])
+        self.assertEqual(queue.pop(), [])
diff --git a/tox.ini b/tox.ini
new file mode 100644
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,16 @@
+[tox]
+envlist=flake8,py3
+
+[testenv:py3]
+deps =
+  .[testing]
+  pytest-cov
+commands =
+   pytest --cov=swh --cov-branch {posargs}
+
+[testenv:flake8]
+skip_install = true
+deps =
+  flake8
+commands =
+  {envpython} -m flake8