diff --git a/README.md b/README.md
index a0bd23d..f714bd7 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,12 @@ Currently there is no documentation :-/
 Installing
 ---
 
+### Prerequisities
+
+Psycopg2 needs PostgreSQL client library to be installed. On Debian, the package is `libpq-dev`.
+
+### Installation
+
 1. Pull the repository to preferred location (`git clone
    https://gitea.ledoian.cz/LEdoian/Wish.git <location>` should be sufficient).
 2. Optionally create a virtualenv (the deployment script and example
@@ -36,6 +42,8 @@ Installing
 5. Verify the configuration using `./manage.py check --deploy`. If there are
    relevant errors, tweak the configuration more.
 6. If everything seems OK, start the systemd service and try reaching the site.
+7. You will need a superuser to be able to add other users and use the admin
+   site: `./manage.py createsuperuser`
 
 You will likely need to reference documentation of Django, uWSGI (or other WSGI
 server implementation), web reverse proxy of your liking and your service manager.