diff --git a/generate-config.sh b/generate-config.sh
index d39d83f..02ee2f8 100644
--- a/generate-config.sh
+++ b/generate-config.sh
@@ -10,5 +10,5 @@ cd /mnt/etc/nixos
 git init .
 git add .
 git commit -m "initial commit"
-git submodule add https://gogs.prunetwork.fr/nixos-config/nixos-template-base.git base
-git submodule add https://gogs.prunetwork.fr/Capgemini-CDS-Arkea/template-nixos.git capgemini-cmb
+git submodule add -b nixos-unstable https://gogs.prunetwork.fr/nixos-config/nixos-template-base.git base
+git submodule add -b master https://gogs.prunetwork.fr/Capgemini-CDS-Arkea/template-nixos.git capgemini-cmb