diff --git a/conftest.py b/conftest.py
--- a/conftest.py
+++ b/conftest.py
@@ -5,7 +5,11 @@
 
 import pytest
 
-pytest_plugins = ["swh.scheduler.pytest_plugin", "swh.storage.pytest_plugin"]
+pytest_plugins = [
+    "swh.scheduler.pytest_plugin",
+    "swh.storage.pytest_plugin",
+    "swh.loader.pytest_plugin",
+]
 
 
 @pytest.fixture(scope="session")
diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,5 +1,5 @@
 swh.core >= 0.0.7
-swh.loader.core >= 0.5.5
+swh.loader.core >= 0.5.9
 swh.model >= 0.4.0
 swh.scheduler >= 0.0.39
 swh.storage >= 0.10.0
diff --git a/swh/loader/git/tests/conftest.py b/swh/loader/git/tests/conftest.py
--- a/swh/loader/git/tests/conftest.py
+++ b/swh/loader/git/tests/conftest.py
@@ -3,9 +3,6 @@
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
-import os
-import yaml
-
 import pytest
 
 from typing import Any, Dict
@@ -36,12 +33,3 @@
         "pack_size_bytes": 4 * 1024 * 1024 * 1024,
         "save_data": False,
     }
-
-
-@pytest.fixture
-def swh_config(swh_loader_config, monkeypatch, tmp_path):
-    conffile = os.path.join(str(tmp_path), "loader.yml")
-    with open(conffile, "w") as f:
-        f.write(yaml.dump(swh_loader_config))
-    monkeypatch.setenv("SWH_CONFIG_FILENAME", conffile)
-    return conffile