diff --git a/server/api/api/v1/accounts/update_credentials/index.ts b/server/api/api/v1/accounts/update_credentials/index.ts
index 2b664489..a79d7081 100644
--- a/server/api/api/v1/accounts/update_credentials/index.ts
+++ b/server/api/api/v1/accounts/update_credentials/index.ts
@@ -321,6 +321,7 @@ export default (app: Hono) =>
 
             await user.update({
                 displayName: self.displayName,
+                username: self.username,
                 note: self.note,
                 avatar: self.avatar,
                 header: self.header,