diff --git a/docs/design/10-t3-requirement-exploration-and-blackboard-display.md b/docs/design/10-t3-requirement-exploration-and-blackboard-display.md
index c8d922f..4ee657c 100644
--- a/docs/design/10-t3-requirement-exploration-and-blackboard-display.md
+++ b/docs/design/10-t3-requirement-exploration-and-blackboard-display.md
@@ -168,7 +168,7 @@ debounce 500ms：如果短时间内多个事件，只刷新一次。
 | 文件 | 改动 | 行数 |
 |------|------|------|
 | `src/api/blackboard_routes.py` | add_comment 后推送 SSE comment_added | ~8 行 |
-| `src/api/blackboard_routes.py` | checkpoint approve 后推送 SSE checkpoint_resolved | ~8 行 |
+| `src/api/checkpoint_routes.py` | checkpoint approve/reject 后推送 SSE checkpoint_resolved | ~8 行 |
 | `src/frontend/src/store.ts` | 新增 comment_added/checkpoint_resolved 事件监听 + TaskModal 自动刷新 | ~20 行 |
 | `src/daemon/sse.py` | 无需改（SSEBroker 已支持任意 event_type） | 0 |