I want to install my pptp in my digitalocean vps according to the web

https://www.digitalocean.com/community/tutorials/how-to-setup-your-own-vpn-with-pptp

in step 5 :

Step 5 - Setup Clients

On your client servers, install PPTP client:

yum -y install pptp

My os is debian .

root@change:~# apt-get -y install pptp
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package pptp

how to install pptp in my debian?