diff --git a/conftest.py b/conftest.py
new file mode 100644
index 000000000..f6b59a455
--- /dev/null
+++ b/conftest.py
@@ -0,0 +1,21 @@
+"""
+Global PyTest configuration.
+
+This file is automatically loaded by PyTest before running any tests and is used
+to define global fixtures and command line options. Command line options can
+only be defined in this file.
+"""
+
+import pytest
+
+
+def pytest_addoption(parser: pytest.Parser) -> None:
+    """Define additional command lines to customise the examples."""
+    parser.addoption(
+        "--broker-url",
+        help=(
+            "The URL of the broker to use. If this option has been given, the container"
+            " will _not_ be started."
+        ),
+        type=str,
+    )
diff --git a/examples/conftest.py b/examples/conftest.py
index aa1de61b1..eba8ffc73 100644
--- a/examples/conftest.py
+++ b/examples/conftest.py
@@ -21,18 +21,6 @@
 EXAMPLE_DIR = Path(__file__).parent.resolve()
 
 
-def pytest_addoption(parser: pytest.Parser) -> None:
-    """Define additional command lines to customise the examples."""
-    parser.addoption(
-        "--broker-url",
-        help=(
-            "The URL of the broker to use. If this option has been given, the container"
-            " will _not_ be started."
-        ),
-        type=str,
-    )
-
-
 @pytest.fixture(scope="session")
 def broker(request: pytest.FixtureRequest) -> Generator[URL, Any, None]:
     """