diff --git a/docs/userguide/testing.rst b/docs/userguide/testing.rst
index 4deccd0f15c..330a24d1dc2 100644
--- a/docs/userguide/testing.rst
+++ b/docs/userguide/testing.rst
@@ -105,7 +105,8 @@ Celery initially ships the plugin in a disabled state, to enable it you can eith
 
     * `pip install celery[pytest]`
     * `pip install pytest-celery`
-    * or add `pytest_plugins = 'celery.contrib.pytest'` to your pytest.ini
+    * or add an environment variable `PYTEST_PLUGINS=celery.contrib.pytest`
+    * or add `pytest_plugins = ("celery.contrib.pytest", )` to your root conftest.py
 
 
 Marks