diff --git a/luogu-api.d.ts b/luogu-api.d.ts
index c89c615..30e498a 100644
--- a/luogu-api.d.ts
+++ b/luogu-api.d.ts
@@ -386,7 +386,7 @@ export interface TagsResponse {
 }
 
 export interface ProblemData {
-  problem: ProblemDetails & ProblemStatus;
+  problem: ProblemDetails & Maybe<ProblemStatus>;
   contest: ContestSummary | null;
   discussions: {
     id: number;
@@ -395,7 +395,7 @@ export interface ProblemData {
   }[];
   bookmarked: boolean;
   vjudgeUsername: string | null;
-  recommendations: (ProblemSummary & ProblemStatus)[];
+  recommendations: (ProblemSummary & Maybe<ProblemStatus>)[];
   lastLanguage: number;
   lastCode: string;
   privilegedTeams: TeamSummary[];
diff --git a/problems.md b/problems.md
index 6d406e4..bcf5f13 100644
--- a/problems.md
+++ b/problems.md
@@ -13,7 +13,7 @@
   </tr>
   <tr>
     <th align="right">响应主体</th>
-    <td><code>application/json</code> (<code>DataResponse&lt;{ problems: List&lt;Problem &amp; ProblemStatus&gt;; page: number; }&gt;</code>)</td>
+    <td><code>application/json</code> (<code>DataResponse&lt;{ problems: List&lt;Problem &amp; Maybe&lt;ProblemStatus&gt;&gt;; page: number; }&gt;</code>)</td>
   </tr>
 </table>