diff --git a/backend/app/schemas.py b/backend/app/schemas.py
index b9b8db6..be63259 100644
--- a/backend/app/schemas.py
+++ b/backend/app/schemas.py
@@ -287,7 +287,7 @@ class Slot(BaseModel):
     last_refill: datetime
     time_until_refill: int  # Can't be Optional
     dewar_unique_id: Optional[str]  # Ensure this field exists
-    dewar_name: Optional[str] = None  # Optional for convenience
+    dewar: Optional[Dewar] = None  # Add this field
 
     class Config:
         from_attributes = True
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