diff --git a/src/controllers/api/ditto.ts b/src/controllers/api/ditto.ts
index 708e6ece..e3c6017f 100644
--- a/src/controllers/api/ditto.ts
+++ b/src/controllers/api/ditto.ts
@@ -300,7 +300,7 @@ const updateInstanceSchema = z.object({
   thumbnail: z.object({
     url: z.string().url(),
   }),
-}).strict();
+});
 
 export const updateInstanceController: AppController = async (c) => {
   const body = await parseBody(c.req.raw);