diff --git a/requirements-test.txt b/requirements-test.txt
index b44d36c..d9ea615 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,2 +1,3 @@
 pytest
+pytest-mock
 swh.core[http] >= 0.0.61
diff --git a/swh/loader/svn/tests/test_task.py b/swh/loader/svn/tests/test_task.py
index 7429b48..c2430f9 100644
--- a/swh/loader/svn/tests/test_task.py
+++ b/swh/loader/svn/tests/test_task.py
@@ -1,51 +1,50 @@
 # Copyright (C) 2019  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
-from unittest.mock import patch
 
-
-@patch('swh.loader.svn.loader.SvnLoader.load')
-def test_svn_loader(
-        mock_loader, swh_app, celery_session_worker, swh_config):
+def test_svn_loader(mocker, swh_app, celery_session_worker, swh_config):
+    mock_loader = mocker.patch('swh.loader.svn.loader.SvnLoader.load')
     mock_loader.return_value = {'status': 'eventful'}
 
     res = swh_app.send_task(
         'swh.loader.svn.tasks.LoadSvnRepository',
         (), dict(url='some-technical-url', origin_url='origin-url'))
     assert res
     res.wait()
     assert res.successful()
 
     assert res.result == {'status': 'eventful'}
 
 
-@patch('swh.loader.svn.loader.SvnLoaderFromDumpArchive.load')
 def test_svn_loader_from_dump(
-        mock_loader, swh_app, celery_session_worker, swh_config):
+        mocker, swh_app, celery_session_worker, swh_config):
+    mock_loader = mocker.patch(
+        'swh.loader.svn.loader.SvnLoaderFromDumpArchive.load')
     mock_loader.return_value = {'status': 'eventful'}
 
     res = swh_app.send_task(
         'swh.loader.svn.tasks.MountAndLoadSvnRepository',
         (), dict(url='some-url', archive_path='some-path'))
     assert res
     res.wait()
     assert res.successful()
 
     assert res.result == {'status': 'eventful'}
 
 
-@patch('swh.loader.svn.loader.SvnLoaderFromRemoteDump.load')
 def test_svn_loader_from_remote_dump(
-        mock_loader, swh_app, celery_session_worker, swh_config):
+        mocker, swh_app, celery_session_worker, swh_config):
+    mock_loader = mocker.patch(
+        'swh.loader.svn.loader.SvnLoaderFromRemoteDump.load')
     mock_loader.return_value = {'status': 'eventful'}
 
     res = swh_app.send_task(
         'swh.loader.svn.tasks.DumpMountAndLoadSvnRepository',
         (), dict(url='some-remote-dump-url', origin_url='origin-url'))
     assert res
     res.wait()
     assert res.successful()
 
     assert res.result == {'status': 'eventful'}