diff --git a/swh/lister/pytest_plugin.py b/swh/lister/pytest_plugin.py
index 86760c6..5a255b5 100644
--- a/swh/lister/pytest_plugin.py
+++ b/swh/lister/pytest_plugin.py
@@ -1,62 +1,58 @@
 # Copyright (C) 2019-2020  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
 
 import logging
 import os
 
 import pytest
 from sqlalchemy import create_engine
 import yaml
 
 from swh.lister import SUPPORTED_LISTERS, get_lister
 from swh.lister.core.models import initialize
 
 logger = logging.getLogger(__name__)
 
 
 @pytest.fixture
-def lister_db_url(postgresql_proc, postgresql):
-    db_url = "postgresql://{user}@{host}:{port}/{dbname}".format(
-        host=postgresql_proc.host,
-        port=postgresql_proc.port,
-        user="postgres",
-        dbname="tests",
-    )
+def lister_db_url(postgresql):
+    db_params = postgresql.get_dsn_parameters()
+    db_url = "postgresql://{user}@{host}:{port}/{dbname}".format(**db_params)
     logger.debug("lister db_url: %s", db_url)
     return db_url
 
 
 @pytest.fixture
 def lister_under_test():
     """Fixture to determine which lister to test"""
     return "core"
 
 
 @pytest.fixture
 def swh_lister_config(lister_db_url, swh_scheduler_config):
     return {
         "scheduler": {"cls": "local", **swh_scheduler_config},
         "lister": {"cls": "local", "args": {"db": lister_db_url},},
         "credentials": {},
         "cache_responses": False,
     }
 
 
 @pytest.fixture(autouse=True)
 def swh_config(swh_lister_config, monkeypatch, tmp_path):
     conf_path = os.path.join(str(tmp_path), "lister.yml")
     with open(conf_path, "w") as f:
         f.write(yaml.dump(swh_lister_config))
     monkeypatch.setenv("SWH_CONFIG_FILENAME", conf_path)
     return conf_path
 
 
 @pytest.fixture
 def swh_lister(lister_db_url, swh_scheduler, lister_under_test, swh_config):
     assert lister_under_test in SUPPORTED_LISTERS
     lister = get_lister(lister_under_test, db_url=lister_db_url)
     initialize(create_engine(lister_db_url), drop_tables=True)
 
     return lister