diff --git a/pyproject.toml b/pyproject.toml
index 1c74bbb..0d11e2d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,6 +2,7 @@
 pythonpath = ["onvif"]
 log_cli="true"
 log_level="NOTSET"
+plugins = ["covdefaults"]
 
 
 [build-system]
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 00aebf9..a54395a 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,6 +8,7 @@ aiohttp==3.12.10
 pytest==8.3.5
 pytest-cov==6.1.1
 pytest-asyncio==0.26.0
+covdefaults==2.3.0
 
 # pre-commit
 pre-commit==4.2.0