diff --git a/main.py b/main.py
index de8fa1a..7500dd4 100644
--- a/main.py
+++ b/main.py
@@ -24,9 +24,9 @@ class SAMRequest(BaseModel):
     user_id: int
     image_path: str = Field(..., description="图片路径，必填字段")
     type: str = Field(..., description="推理类型，必填字段")
-    points: Optional[List[List[float]]] = None
-    labels: Optional[List[int]] = None
-    box: Optional[List[int]] = None
+    points: Optional[List[List[float]]] | None = None
+    labels: Optional[List[int]] | None = None
+    box: Optional[List[int]] | None = None
 
 
 class SimpleLitAPI(ls.LitAPI):