diff --git a/scripts/upgrade b/scripts/upgrade
index d06bfe4..a096f11 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -197,9 +197,10 @@ then
     # Install net_LDAP
     ynh_composer_exec --commands="require kolab/net_ldap3"
 
-    # Update or install contextmenu and automatic_addressbook plugins
-    # https://plugins.roundcube.net/packages/sblaisot/automatic_addressbook
-    # https://plugins.roundcube.net/packages/johndoh/contextmenu
+    # Update or install contextmenu, automatic_addressbook and calendar plugins
+    # https://plugins.roundcube.net/#/packages/johndoh/contextmenu
+    # https://plugins.roundcube.net/#/packages/projectmyst/automatic_addressbook
+    # https://plugins.roundcube.net/#/packages/kolab/calendar
     ynh_composer_exec --commands="update --no-dev --prefer-dist \
         johndoh/contextmenu $contextmenu_version \
         sblaisot/automatic_addressbook $automatic_addressbook_version \