Viber: Version `GLIBC_2.24' Not Found

If the following error appears after trying to execute Viber.sh on Debian Wheezy manually:

/usr/share/viber/Viber.sh 

/usr/share/viber/Viber: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.24' not found (required by /usr/share/viber/Viber)

You need the latest version of glibc, to do that add the following to /etc/apt/sources.list:

sudo vi /etc/apt/sources.list

deb http://debian.co.il/debian/ testing main
deb-src http://debian.co.il/debian/ testing main

Update apt and install the latest glibc library:

sudo apt-get update
sudo apt-get -t testing install libc6