diff --git a/README.md b/README.md
index 3c51ec0..60a45c1 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,10 @@ Linux Insides
 |Initialization|[@lijiangsheng1](https://github.com/lijiangsheng1)|正在进行|
 |Interrupts||未开始|
 |System calls|[@qianmoke](https://github.com/qianmoke)|正在进行|
+|├4.1||未开始|
+|├2.2||未开始|
+|├4.3||未开始|
+|├4.4|未开始|
 |Timers and time management||未开始|
 |Memory management|[@choleraehyq](http://cholerae.com)|正在进行|
 |Concepts||未开始|