diff --git a/fast_depends/library/serializer.py b/fast_depends/library/serializer.py
index 5fc2b06..54f631b 100644
--- a/fast_depends/library/serializer.py
+++ b/fast_depends/library/serializer.py
@@ -41,5 +41,5 @@ def __call__(self, options: Dict[str, Any]) -> Dict[str, Any]:
     def get_aliases(self) -> Tuple[str, ...]:
         return ()
 
-    def response(self, value: Any) -> Any:
+    def response(self, value: Any) -> Any:  # pragma: no cover
         return value
diff --git a/fast_depends/use.py b/fast_depends/use.py
index ff4a60e..163f315 100644
--- a/fast_depends/use.py
+++ b/fast_depends/use.py
@@ -29,7 +29,7 @@
 P = ParamSpec("P")
 T = TypeVar("T")
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from fast_depends.core import CallModel
     from fast_depends.library.serializer import Serializer