diff --git a/README.md b/README.md
index f2dd178..e8b2ef6 100644
--- a/README.md
+++ b/README.md
@@ -94,6 +94,8 @@ C:\Users\VirtualBox VMs\
 
 ### 四、在MAC OS下进行实验
 
+感谢 altkatz！
+
 Using gcc49
 
 #### 1.install [homebrew](http://brew.sh/)