diff --git a/backend/app/routers/information.py b/backend/app/routers/information.py
index e2be6b1..82054ff 100644
--- a/backend/app/routers/information.py
+++ b/backend/app/routers/information.py
@@ -39,7 +39,7 @@ class InformationCreate(BaseModel):
 
 class InformationUpdate(BaseModel):
     title: Optional[str] = None
-    content: Optional[str]
+    content: Optional[str] = None
     status: Optional[str] = None
     expect_category: Optional[str] = None
     expect_version: Optional[str] = None