diff --git a/conftest.py b/conftest.py
--- a/conftest.py
+++ b/conftest.py
@@ -1,3 +1,8 @@
+# Copyright (C) 2020  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 hypothesis import settings
 
 # define tests profile. Full documentation is at:
@@ -9,3 +14,6 @@
 # configuration file is found (--doctest-modules forces the module
 # loading)
 collect_ignore = ["swh/indexer/storage/api/wsgi.py"]
+
+# we use the swh_scheduler fixture
+pytest_plugins = ["swh.scheduler.pytest_plugin"]
diff --git a/pytest.ini b/pytest.ini
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,2 +1,3 @@
 [pytest]
+addopts = -p no:pytest_swh_scheduler
 norecursedirs = docs
diff --git a/requirements-test.txt b/requirements-test.txt
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -3,3 +3,4 @@
 pytest-postgresql
 hypothesis>=3.11.0
 swh.storage>= 0.0.178
+swh.scheduler[testing] >= 0.5.0
diff --git a/swh/indexer/tests/conftest.py b/swh/indexer/tests/conftest.py
--- a/swh/indexer/tests/conftest.py
+++ b/swh/indexer/tests/conftest.py
@@ -9,7 +9,6 @@
 import pytest
 
 from swh.objstorage import get_objstorage
-from swh.scheduler.tests.conftest import *  # noqa
 from swh.storage import get_storage
 from swh.indexer.storage import get_indexer_storage
 
@@ -76,11 +75,3 @@
         "swh.objstorage.factory._STORAGE_CLASSES", {"memory": lambda: objstorage}
     ):
         yield objstorage
-
-
-@pytest.fixture(scope="session")  # type: ignore  # expected redefinition
-def celery_includes():
-    return [
-        "swh.indexer.tests.tasks",
-        "swh.indexer.tasks",
-    ]
diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -7,6 +7,7 @@
 deps =
   pytest-cov
   pifpaf
+  swh-scheduler[testing] >= 0.5.0
   dev: pdbpp
 commands =
   pifpaf run postgresql -- pytest --doctest-modules \