diff --git a/setup-usl-mm b/setup-usl-mm
index 0353787..aa503cf 100755
--- a/setup-usl-mm
+++ b/setup-usl-mm
@@ -56,6 +56,9 @@ pre_reboot_script () {
 	echo "options zfs zfs_arc_min=268435456" > /etc/modprobe.d/zfs.conf
 	echo "options zfs zfs_arc_max=1610612736" >> /etc/modprobe.d/zfs.conf
 
+	echo "Doing update-initramfs -u"
+	update-initramfs -u
+
 	echo "Configuring network to use bridge"
 echo "Exec ifconfig"
 ifconfig