diff --git a/build yoto for raspberryPi.md b/build yoto for raspberryPi.md
index 489d460..ba8aa03 100644
--- a/build yoto for raspberryPi.md	
+++ b/build yoto for raspberryPi.md	
@@ -1,6 +1,11 @@
 Raspberry Pi with Yocto
 =======================
 
+Install dependency:
+```
+pacman -S diffstat chrpath cpio
+```
+
 1) set-up working directory:
 ----------------------------