diff --git a/software/slapos-testing/software.cfg b/software/slapos-testing/software.cfg
index 4cbf7cf7c79e5a3bc3d618c58f651b2b2fc05202..e5cde87a926b453dbe11691204492d1248651044 100644
--- a/software/slapos-testing/software.cfg
+++ b/software/slapos-testing/software.cfg
@@ -30,6 +30,7 @@ eggs =
   ${lxml-python:egg}
   ${python-cryptography:egg}
   ${pycurl:egg}
+  dnspython
   Jinja2
   erp5.util
   slapos.cookbook