diff --git a/hosters/hetzner-dedicated/zfs-uefi-nvme-nixos.sh b/hosters/hetzner-dedicated/zfs-uefi-nvme-nixos.sh
index 3c268ec..a30c94d 100644
--- a/hosters/hetzner-dedicated/zfs-uefi-nvme-nixos.sh
+++ b/hosters/hetzner-dedicated/zfs-uefi-nvme-nixos.sh
@@ -268,6 +268,8 @@ mount /dev/md127 /mnt/boot/efi
 mkdir -p /etc/nix
 echo "build-users-group =" > /etc/nix/nix.conf
 
+chmod 0664 /etc/nix/nix.conf
+
 # using determinate systems installer, for more information
 # check https://github.com/DeterminateSystems/nix-installer
 curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install