diff --git a/README.md b/README.md
index 6aa4849..acffc5c 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ sudo apt-get install freerdp2-dev freerdp2-x11
 ```
 sudo bash -c 'echo "deb http://deb.debian.org/debian buster-backports main" >> /etc/apt/sources.list.d/backports.list'
 sudo apt update
-sudo apt -y -t buster-backports install freerdp2-dev
+sudo apt -y -t buster-backports install freerdp2-dev libpulse-dev
 ```
 
 Script for installing Guacamole 1.3.0 on Ubuntu 16.04 or newer (with MySQL, or remote MySQL). It should also work on pure [Debian](https://www.debian.org/), [Raspbian](https://www.raspberrypi.org/downloads/raspbian/), [Linux Mint](https://linuxmint.com/) (18/LMDE 4 or newer) or [Kali Linux](https://www.kali.org/). I have tested this with Debian 10.3.0 (Buster). **If other versions don't work please open an issue.** It is likely due to a required library having a different name.