diff --git a/docs/usage.rst b/docs/usage.rst
index d13a877ece8b0b193dfc63456843896aabd20968..439d0dcdba01c671cb3ea8baf988ab2cd2fe2b04 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -148,11 +148,12 @@ packages, and to prepare the environment a bit on the Ansible server:
      mkdir ~/mysite/
      mkvirtualenv -p /usr/bin/python3 -a ~/mysite/ mysite
      pip install -U pip setuptools
-     pip install 'ansible~=2.9.0' netaddr
+     pip install 'ansible~=2.9.0' dnspython netaddr
 
 .. warning::
-   The ``netaddr`` package is important since it is used internally via
-   ``ipv4/ipv6`` lookup plugin.
+   The ``dnspython`` and ``netaddr`` packages are needed since they
+   are used internally by some of the roles for the ``dig`` and
+   ``ipv4/ipv6`` lookup plugins.
 
 
 Cloning the *Majic Ansible Roles*