diff --git a/.gitignore b/.gitignore
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@
 dist/
 *.egg-info
 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/archiver/db.py b/swh/archiver/db.py
--- a/swh/archiver/db.py
+++ b/swh/archiver/db.py
@@ -165,14 +165,17 @@
     def content_archive_add_from_temp(self, cur=None):
         """Add new content archive entries from temporary table.
 
-        Use from archiver.storage module::
-            db.mktemp_content_archive(cur)
-            # copy data over to the temp table
-            db.copy_to([{'colname': id0}, {'colname': id1}],
-                       'tmp_cache_content',
-                       ['colname'], cur)
-            # insert into the main table
-            db.add_content_archive_from_temp(cur)
+        Use from archiver.storage module:
+
+        .. code-block:: python
+
+           db.mktemp_content_archive(cur)
+           # copy data over to the temp table
+           db.copy_to([{'colname': id0}, {'colname': id1}],
+                      'tmp_cache_content',
+                      ['colname'], cur)
+           # insert into the main table
+           db.add_content_archive_from_temp(cur)
 
         """
         pass
diff --git a/swh/archiver/tests/test_archiver.py b/swh/archiver/tests/test_archiver.py
--- a/swh/archiver/tests/test_archiver.py
+++ b/swh/archiver/tests/test_archiver.py
@@ -10,7 +10,7 @@
 import tempfile
 import unittest
 
-from nose.plugins.attrib import attr
+import pytest
 
 from swh.archiver import (ArchiverWithRetentionPolicyDirector,
                           ArchiverWithRetentionPolicyWorker)
@@ -22,7 +22,7 @@
 from swh.archiver.tests import SQL_DIR
 
 
-@attr('db')
+@pytest.mark.db
 class TestArchiver(SingleDbTestFixture, unittest.TestCase):
     """ Test the objstorage archiver.
     """
@@ -177,7 +177,7 @@
         self.archiver.run()
         # now the content should be present on remote objstorage
         remote_data = self.dest_storage.get(obj_id)
-        self.assertEquals(obj_data, remote_data)
+        self.assertEqual(obj_data, remote_data)
 
     def test_archive_present_content(self):
         """ A content that is not 'missing' shouldn't be archived.
diff --git a/swh/archiver/tests/test_checker.py b/swh/archiver/tests/test_checker.py
--- a/swh/archiver/tests/test_checker.py
+++ b/swh/archiver/tests/test_checker.py
@@ -7,7 +7,7 @@
 import tempfile
 import unittest
 
-from nose.plugins.attrib import attr
+import pytest
 
 from swh.archiver.checker import RepairContentChecker
 from swh.model import hashutil
@@ -29,7 +29,7 @@
             raise ObjNotFoundError(obj_id)
 
 
-@attr('fs')
+@pytest.mark.fs
 class TestRepairChecker(unittest.TestCase):
     """ Test the content integrity checker
     """
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]
+  pifpaf
+  pytest-cov
+commands =
+  pifpaf run postgresql -- pytest --cov=swh --cov-branch {posargs}
+
+[testenv:flake8]
+skip_install = true
+deps =
+  flake8
+commands =
+  {envpython} -m flake8