diff --git a/conftest.py b/conftest.py
--- a/conftest.py
+++ b/conftest.py
@@ -1,6 +1,15 @@
+# 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:
 # https://hypothesis.readthedocs.io/en/latest/settings.html#settings-profiles
 settings.register_profile("fast", max_examples=5, deadline=5000)
 settings.register_profile("slow", max_examples=20, deadline=5000)
+
+
+pytest_plugins = ["swh.scheduler.pytest_plugin"]
diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -55,8 +55,6 @@
         swh-scheduler=swh.scheduler.cli:main
         [swh.cli.subcommands]
         scheduler=swh.scheduler.cli:cli
-        [pytest11]
-        pytest_swh_scheduler=swh.scheduler.pytest_plugin
     """,
     classifiers=[
         "Programming Language :: Python :: 3",
diff --git a/swh/scheduler/tests/conftest.py b/swh/scheduler/tests/conftest.py
--- a/swh/scheduler/tests/conftest.py
+++ b/swh/scheduler/tests/conftest.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2016-2019  The Software Heritage developers
+# Copyright (C) 2016-2020  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
@@ -12,10 +12,6 @@
 from swh.scheduler.model import ListedOrigin, Lister
 from swh.scheduler.tests.common import LISTERS
 
-from swh.scheduler.pytest_plugin import (  # noqa: F401 (backwards-compat imports)
-    swh_scheduler_celery_app as swh_app,
-    swh_scheduler_celery_worker as celery_session_worker,
-)
 
 # make sure we are not fooled by CELERY_ config environment vars
 for var in [x for x in os.environ.keys() if x.startswith("CELERY")]: