diff --git a/tests/conftest.py b/tests/conftest.py
index 99db0884496..f743a2fe96a 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -318,6 +318,12 @@ def long_repr_strings() -> Generator[None, None, None]:
         arepr.maxother = original_maxother
 
 
+@pytest.fixture(autouse=True)
+def enable_event_loop_debug(event_loop: asyncio.AbstractEventLoop) -> None:
+    """Enable event loop debug mode."""
+    event_loop.set_debug(True)
+
+
 @pytest.fixture(autouse=True)
 def verify_cleanup(
     event_loop: asyncio.AbstractEventLoop,