diff --git a/docs/testsite.rst b/docs/testsite.rst
index c5769fb660682c4bfce6a9867bc261f2d6b11ce8..a9ddf29718e7345d91688a1534cfb52845f70132 100644
--- a/docs/testsite.rst
+++ b/docs/testsite.rst
@@ -70,14 +70,22 @@ In order to deploy the test site, the following steps would normally be taken:
 
 5. Install all servers using the generated preseed files.
 
-6. Invoke the ``bootstrap.yml`` playbook in order to set-up some basic
+6. Add the SSH host fingerprints to your ``known_hosts`` file (don't forget to
+   remove old entries if you are redoing the process). You can easily obtain all
+   the necessary fingerprints with command:
+
+   .. code-block:: shell
+
+      ssh-keyscan mail.example.com ldap.example.com xmpp.example.com
+
+7. Invoke the ``bootstrap.yml`` playbook in order to set-up some basic
    environment for Ansible runs on all servers:
 
   .. code-block:: shell
 
     ansible-playbook playbooks/bootstrap.yml
 
-7. Finally, apply configuration on all servers:
+8. Finally, apply configuration on all servers:
 
   .. code-block:: shell