diff --git a/spoolman/api/v1/models.py b/spoolman/api/v1/models.py
index 87a150c..d4417c7 100644
--- a/spoolman/api/v1/models.py
+++ b/spoolman/api/v1/models.py
@@ -139,7 +139,7 @@ class Spool(BaseModel):
     def from_db(item: models.Spool) -> "Spool":
         """Create a new Pydantic spool object from a database spool object."""
         filament = Filament.from_db(item.filament)
-        remaining_weight: float | None = None
+        remaining_weight: Optional[float] = None  # noqa: FA100
         if filament.weight is not None:
             remaining_weight = max(filament.weight - item.used_weight, 0)