diff --git a/bootstrap.sh b/bootstrap.sh
index 3bfebe3..b8e7f4f 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -1,9 +1,9 @@
 #!/bin/bash
 
 sudo apt-get update
-sudo apt-get install -y software-properties-common git mosh
+sudo apt-get install -y software-properties-common git mosh dnsutils
 sudo add-apt-repository -y ppa:ansible/ansible
 sudo apt-get update
 sudo apt-get install -y ansible
-ssh-keygen -t rsa -N "" -f ~/.ssh/id_rsa
+[ -e ~/.ssh/id_rsa ] || ssh-keygen -t rsa -N "" -f ~/.ssh/id_rsa
 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys