diff --git a/plans/TASKLIST.md b/plans/TASKLIST.md
index 2f8f331..2fbef35 100644
--- a/plans/TASKLIST.md
+++ b/plans/TASKLIST.md
@@ -58,11 +58,11 @@
   - [x] 新增 response schema
   - [x] 新增 Proposal detail 中嵌套 Essential 的返回结构
 
-- [ ] BE-PR-006:新增 Proposal 下 Essential CRUD API(backend only)
-  - [ ] 实现创建 Essential
-  - [ ] 实现编辑 Essential
-  - [ ] 实现删除 Essential
-  - [ ] 实现 Proposal 详情返回 Essential 列表
+- [x] BE-PR-006:新增 Proposal 下 Essential CRUD API(backend only)
+  - [x] 实现创建 Essential
+  - [x] 实现编辑 Essential
+  - [x] 实现删除 Essential
+  - [x] 实现 Proposal 详情返回 Essential 列表
 
 - [ ] BE-PR-007:重构 Proposal Accept 逻辑(backend only)
   - [ ] 移除"accept 后生成单个 `story/feature` task"的旧逻辑