# on a fresh Ubuntu 16.04 host
sudo apt-get update

# copy the packages from https://launchpad.net/debian/+source/openssh/1:7.4p1-10+deb9u3

wget https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/openssh/1:7.4p1-10/openssh_7.4p1-10.dsc
wget https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/openssh/1:7.4p1-10/openssh_7.4p1.orig.tar.gz
wget https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/openssh/1:7.4p1-10/openssh_7.4p1-10.debian.tar.xz

tar -zxvf openssh_7.4p1.orig.tar.gz
tar -xvf openssh_7.4p1-10.debian.tar.xz

# install build dep packages
sudo apt-get install -t xenial-backports devscripts autotools-dev debhelper dh-autoreconf dh-exec dh-systemd libaudit-dev libedit-dev libgtk-3-dev libkrb5-dev libpam-dev libselinux1-dev libssl-dev libwrap0-dev zlib1g-dev libsystemd-dev -y
sudo apt-get install build-essential fakeroot dpkg-dev

dpkg-source -x openssh_7.4p1-10.dsc
cd openssh-7.4p1/
dpkg-buildpackage -rfakeroot -b

# now package would have been succesfully built on root directory (cd ../)
cd ..
ls -ltr *.deb

# lets install new openssh deb package
#stop ssh
sudo systemctl stop ssh

#install
sudo dpkg -i --force-confold  openssh-client_7.4p1-10_amd64.deb openssh-server_7.4p1-10_amd64.deb openssh-sftp-server_7.4p1-10_amd64.deb

# check the version now
ssh -V