diff --git a/net/cm/README.md b/net/cm/README.md
index 6e3d4f5..de173a3 100644
--- a/net/cm/README.md
+++ b/net/cm/README.md
@@ -5,7 +5,7 @@ This script will download `*.zip` and `*.img` files from [http://download.cyanog
 This tool requires `python3` `bypy` `python3-bs4`, `trickle` is used for limiting upload speed.
 
 ```
-apt-get install python3 python3-bs4 trickle
+apt-get install python3 python3-bs4 python3-pip trickle
 git clone https://github.com/houtianze/bypy
 ```