diff --git a/docs/prerequisites.md b/docs/prerequisites.md
index 7ce3714e5..9741ff578 100644
--- a/docs/prerequisites.md
+++ b/docs/prerequisites.md
@@ -30,6 +30,8 @@ To install Matrix services using this Ansible playbook, you need:
 
 - [`just`](https://github.com/casey/just) for running `just roles`, `just update`, etc. (see [`justfile`](../justfile)), although you can also run these commands manually
 
+- Strong password (random strings) generator on your own computer. The playbook often requires you to create a strong password and use it for settings on `vars.yml`, components, etc. As any tools should be fine, this playbook has adopted [`pwgen`](https://linux.die.net/man/1/pwgen) (running `pwgen -s 64 1`). [Password Tech](https://pwgen-win.sourceforge.io/), formerly known as "PWGen for Windows", is available as free and open source password generator for Windows. Generally, using a random generator available on the internet is not recommended.
+
 - An HTTPS-capable web server at the base domain name (`example.com`) which is capable of serving static files. Unless you decide to [Serve the base domain from the Matrix server](configuring-playbook-base-domain-serving.md) or alternatively, to use DNS SRV records for [Server Delegation](howto-server-delegation.md).
 
 - Properly configured DNS records for `example.com` (details in [Configuring DNS](configuring-dns.md)).