diff --git a/docs/ReSpeaker_2_Mics_Pi_HAT.md b/docs/ReSpeaker_2_Mics_Pi_HAT.md
index ad91a4ef..b2ff8d6c 100644
--- a/docs/ReSpeaker_2_Mics_Pi_HAT.md
+++ b/docs/ReSpeaker_2_Mics_Pi_HAT.md
@@ -73,6 +73,7 @@ Make sure that you are running [the lastest Raspbian Operating System(debian 9)]
 ```
 sudo apt-get update
 sudo apt-get upgrade
+sudo apt-get install git
 git clone https://github.com/respeaker/seeed-voicecard.git
 cd seeed-voicecard
 sudo ./install.sh
@@ -482,4 +483,4 @@ Please submit any technical issue into our [forum](http://forum.seeedstudio.com/
 
 
 
-<br /><p style="text-align:center"><a href="https://www.seeedstudio.com/act-4.html?utm_source=wiki&utm_medium=wikibanner&utm_campaign=newproducts" target="_blank"><img src="https://github.com/SeeedDocument/Wiki_Banner/raw/master/new_product.jpg" /></a></p>
\ No newline at end of file
+<br /><p style="text-align:center"><a href="https://www.seeedstudio.com/act-4.html?utm_source=wiki&utm_medium=wikibanner&utm_campaign=newproducts" target="_blank"><img src="https://github.com/SeeedDocument/Wiki_Banner/raw/master/new_product.jpg" /></a></p>