diff --git a/doc/conf.py b/doc/conf.py
index 8b3e14022..37b46b5e5 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -43,16 +43,16 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'Modoboa'
-copyright = u'2017, Antoine Nguyen'
+copyright = u'2018, Antoine Nguyen'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = '1.9'
+version = '1.10'
 # The full version, including alpha/beta/rc tags.
-release = '1.9.0'
+release = '1.10.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/doc/upgrade.rst b/doc/upgrade.rst
index 00824f7fe..29b950426 100644
--- a/doc/upgrade.rst
+++ b/doc/upgrade.rst
@@ -146,6 +146,11 @@ If ``transport_maps`` contains ``sql-relaydomains-transport.cf``, remove it.
 
 Reload postfix.
 
+Add the following cron job in order to generate DKIM keys::
+
+  # Generate DKIM keys (they will belong to the user running this job)
+  *       *       *       *       *       root    $PYTHON $INSTANCE/manage.py modo manage_dkim_keys
+
 And finally, upgrade all your installed plugins to the following versions:
 
 .. warning::