diff --git a/conftest.py b/conftest.py
new file mode 100644
--- /dev/null
+++ b/conftest.py
@@ -0,0 +1,8 @@
+# Copyright (C) 2022  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
+
+pytest_plugins = [
+    "swh.graph.pytest_plugin",
+]
diff --git a/swh/graph/tests/conftest.py b/swh/graph/pytest_plugin.py
rename from swh/graph/tests/conftest.py
rename to swh/graph/pytest_plugin.py
--- a/swh/graph/tests/conftest.py
+++ b/swh/graph/pytest_plugin.py
@@ -15,7 +15,7 @@
 from swh.graph.http_naive_client import NaiveClient
 from swh.graph.rpc.swhgraph_pb2_grpc import TraversalServiceStub
 
-SWH_GRAPH_TESTS_ROOT = Path(__file__).parents[0]
+SWH_GRAPH_TESTS_ROOT = Path(__file__).parents[0] / "tests"
 TEST_GRAPH_PATH = SWH_GRAPH_TESTS_ROOT / "dataset/compressed/example"