diff --git a/stack/erp5.cfg b/stack/erp5.cfg
index 50781901d924d93aece65a71ea8a64f6033106ba..9a31ee1a3ea6a19f8d5fa3e2d67ebdc78b4ee987 100644
--- a/stack/erp5.cfg
+++ b/stack/erp5.cfg
@@ -72,6 +72,7 @@ extends =
   ../component/varnish/buildout.cfg
   ../component/w3-validator/buildout.cfg
   ../component/w3m/buildout.cfg
+  ../component/6tunnel/buildout.cfg
   ../component/xorg/buildout.cfg
   ../component/poppler/buildout.cfg
   ../component/xtrabackup/buildout.cfg
@@ -112,6 +113,7 @@ parts =
   kumo
   libreoffice-bin
   w3-validator
+  6tunnel
   tesseract
   hookbox
   bootstrap2.6