diff --git a/Installation.md b/Installation.md
index ab0d818..e19e0c0 100644
--- a/Installation.md
+++ b/Installation.md
@@ -29,7 +29,7 @@ sudo easy_install thefuck
 
 ```bash
 sudo apt-get install python-pip python-dev
-sudo pip install thefuck
+sudo pip install psutil thefuck
 ```
 
 # Arch