diff --git a/Firecracker/get_rootfs.bash b/Firecracker/get_rootfs.bash
index c4abbe9..b8bb602 100755
--- a/Firecracker/get_rootfs.bash
+++ b/Firecracker/get_rootfs.bash
@@ -52,9 +52,9 @@ wget -O "ubuntu-${ubuntu_version}.squashfs.upstream" "https://s3.amazonaws.com/s
 
 # The rootfs in our CI doesn't contain SSH keys to connect to the VM
 # For the purpose of this demo, let's create one and patch it in the rootfs
-unsquashfs "ubuntu-${ubuntu_version}.squashfs.upstream"
+sudo unsquashfs -f "ubuntu-${ubuntu_version}.squashfs.upstream"
 ssh-keygen -f id_rsa -N ""
-cp -v id_rsa.pub squashfs-root/root/.ssh/authorized_keys
+sudo cp -v id_rsa.pub squashfs-root/root/.ssh/authorized_keys
 mv -v id_rsa "./ubuntu-${ubuntu_version}.id_rsa"
 # create ext4 filesystem image
 sudo chown -R root:root squashfs-root