--- a/doc/book/admin/setup.rst	Tue Mar 17 13:36:27 2020 +0100
+++ b/doc/book/admin/setup.rst	Wed Mar 18 09:22:45 2020 +0100
@@ -91,6 +91,12 @@
   * `python3-cubicweb-postgresql-support` contains the necessary dependencies for
     using :ref:`cubicweb with postgresql datatabase <PostgresqlConfiguration>`
 
+.. note::
+
+  You may also require extra Debian packages such as::
+
+      gettext, graphviz
+
 .. _`list of sources`: http://wiki.debian.org/SourcesList
 .. _`Logilab's gnupg key`: https://www.logilab.fr/logilab-debian-keyring.gpg
 .. _`CubicWeb.org Forge`: http://www.cubicweb.org/project/

--- a/doc/tutorials/base/blog-in-five-minutes.rst	Tue Mar 17 13:36:27 2020 +0100
+++ b/doc/tutorials/base/blog-in-five-minutes.rst	Wed Mar 18 09:22:45 2020 +0100
@@ -10,6 +10,12 @@
 
     python3-cubicweb, cubicweb-ctl, cubicweb-blog
 
+.. Note::
+
+    You may also require extra Debian packages such as::
+
+        gettext, graphviz
+
 Windows or Mac OS X users must install |cubicweb| from source (see
 :ref:`SourceInstallation` and :ref:`WindowsInstallation`).