diff --git a/docs/index.md b/docs/index.md
index 89868dc..2938657 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -35,8 +35,8 @@
 * [小作业四](assignments/4.cuda0.md)：CUDA 并行策略
 * [小作业五](assignments/5.simd.md)：向量化
 * [小作业六](assignments/6.cuda1.md)：CUDA 优化
-<!-- * [小作业七](assignments/7.optimization0.md)：单机性能优化
-* [小作业八](assignments/8.profiling_tools.md)：性能分析工具 -->
+* [小作业七](assignments/7.optimization0.md)：单机性能优化
+<!-- * [小作业八](assignments/8.profiling_tools.md)：性能分析工具 -->
 
 ### 大作业
 
diff --git a/mkdocs.yml b/mkdocs.yml
index 17c108f..c90ea0f 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -32,7 +32,7 @@ nav:
       - 小作业四: assignments/4.cuda0.md
       - 小作业五: assignments/5.simd.md
       - 小作业六: assignments/6.cuda1.md
-      # - 小作业七: assignments/7.optimization0.md
+      - 小作业七: assignments/7.optimization0.md
       # - 小作业八: assignments/8.profiling_tools.md
       # - 小作业五: assignments/5.profiling_tools.md
   - 大作业: