diff --git a/Vagrantfile b/Vagrantfile
index 296fae888f491b3b191332201e9dc951b2f020c4..8ccd4647876cf3e7d4db7330e654c5224573b4f6 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -14,7 +14,7 @@ Vagrant.configure(2) do |config|
 
   config.vm.provision "shell", inline: <<-SHELL
     sudo apt-get update
-    sudo apt-get install -y autoconf automake build-essential git libfreetype6-dev libpng12-dev libtool nmap pkg-config python-all-dev python-matplotlib python-nose python-numpy python-pip python-zmq sshpass trace-cmd
+    sudo apt-get install -y autoconf automake build-essential git libfreetype6-dev libpng12-dev libtool nmap pkg-config python-all-dev python-matplotlib python-nose python-numpy python-pip python-zmq sshpass trace-cmd tree
     sudo pip install ipython[notebook] pandas
     sudo apt-get remove -y w3m