diff --git a/pyproject.toml b/pyproject.toml
index bc4332d38f..97ced18d04 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,6 +39,7 @@ exclude = "antarest/fastapi_jwt_auth/*"
 strict = true
 files = "antarest"
 plugins = "pydantic.mypy"
+enable_error_code = "explicit-override"
 
 [[tool.mypy.overrides]]
 module = ["antarest/fastapi_jwt_auth.*"]