diff --git a/post-debootstrap-installer.sh b/post-debootstrap-installer.sh
index 960ee9a..08ec9b3 100755
--- a/post-debootstrap-installer.sh
+++ b/post-debootstrap-installer.sh
@@ -63,6 +63,7 @@ systemctl disable rpcbind.service # rpcbind is not used with NFS v4
 
 # after cryptsetup, mdadm, ... because of update-initramfs
 apt-get -y install linux-image-amd64
+update-grub