diff --git a/CHANGES.rst b/CHANGES.rst
index 46f929e..6fadbcb 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -5,6 +5,9 @@ pytest-mqtt changelog
 
 in progress
 ===========
+- Fix command line options machinery by refactoring essential
+  pytest fixtures to the main package. They have been added to ``testing``
+  beforehand, which is just plain wrong, and broke the 0.4.0 release.
 
 2024-03-31 0.4.0
 ================
diff --git a/pytest_mqtt/mosquitto.py b/pytest_mqtt/mosquitto.py
index debe9ae..573502c 100644
--- a/pytest_mqtt/mosquitto.py
+++ b/pytest_mqtt/mosquitto.py
@@ -80,6 +80,19 @@ def is_mosquitto_running(host: str, port: int) -> bool:
     return probe_tcp_connect(host, port)
 
 
+def pytest_addoption(parser) -> None:
+    parser.addoption("--mqtt-host", action="store", type=str, default="localhost", help="MQTT host name")
+    parser.addoption("--mqtt-port", action="store", type=int, default=1883, help="MQTT port number")
+
+
+@pytest.fixture(scope="session")
+def mqtt_settings(pytestconfig) -> MqttSettings:
+    return MqttSettings(
+        host=pytestconfig.getoption("--mqtt-host"),
+        port=pytestconfig.getoption("--mqtt-port"),
+    )
+
+
 @pytest.fixture(scope="session")
 def mosquitto(mqtt_settings: MqttSettings):
 
diff --git a/testing/conftest.py b/testing/conftest.py
deleted file mode 100644
index f2c67de..0000000
--- a/testing/conftest.py
+++ /dev/null
@@ -1,16 +0,0 @@
-import pytest
-
-from pytest_mqtt.model import MqttSettings
-
-
-def pytest_addoption(parser) -> None:
-    parser.addoption("--mqtt-host", action="store", type=str, default="localhost", help="MQTT host name")
-    parser.addoption("--mqtt-port", action="store", type=int, default=1883, help="MQTT port number")
-
-
-@pytest.fixture(scope="session")
-def mqtt_settings(pytestconfig) -> MqttSettings:
-    return MqttSettings(
-        host=pytestconfig.getoption("--mqtt-host"),
-        port=pytestconfig.getoption("--mqtt-port"),
-    )