diff --git a/readme.txt b/readme.txt
index e1ae6dab1c39501cc141a10088780b756440fdc7..491b9bf0ee045fd0c05989d8dcfaa29f797b86ea 100644
--- a/readme.txt
+++ b/readme.txt
@@ -9,4 +9,8 @@ test close
 
 ## 4th edition
 test stage and branch
-done
\ No newline at end of file
+done
+## 5th test
+change 2 or more times, but only proceed "add" once
+*first change*, and proceed add command
+done