diff --git a/README.md b/README.md
index 4e4b550..52c5e2e 100644
--- a/README.md
+++ b/README.md
@@ -7,5 +7,7 @@
 ## upgrade the shell
 1. `python3 -c 'import pty; pty.spawn("/bin/bash")'`
 2. `ctrl + z`
-3. `stty raw -echo; fg`
-4. `export TERM=xterm`
+3. `stty size`
+4. `stty raw -echo; fg`
+5. `stty rows x columns y`
+6. `export TERM=xterm`