diff --git a/doc/install.md b/doc/install.md
index fa143d27b10f80c34c8c70fd625f3309b860714c..229896d5055c6ac147c9e716bc9f45c8c9380dff 100644
--- a/doc/install.md
+++ b/doc/install.md
@@ -12,7 +12,7 @@ The current version of SOCTools only runs on a single server. A fully distribute
 * Minimal installation of CentOS7
 * Install Ansible
   * `sudo yum -y install epel-release`  
-  * `sudo yum -y install ansible git`
+  * `sudo yum -y install ansible git firewalld`
   * `sudo ansible-galaxy collection install ansible.posix`
 
 ## Clone SOCTools