diff --git a/src/models.py b/src/models.py
index 7c33041..0da8111 100644
--- a/src/models.py
+++ b/src/models.py
@@ -85,6 +85,7 @@ class EstimationResponse(BaseModel):
     results: List[EstimationResult]
 
 class InsuranceChatRequest(BaseModel):
+    uid: int | None = None
     message: str = Field(..., description="User message")
     session_id: Optional[str] = Field(None, description="Chat session ID")