While updating via composer getting below error

[waqasmehmud]

Problem 1 - The requested package kzykhys/steganography 1.0.0 could not be found.

Potential causes:

• A typo in the package name
• The package is not available in a stable-enough version according to your min imum-stability setting see https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion f or more details.

Read http://getcomposer.org/doc/articles/troubleshooting.md for further common problems.

I have tried to change stability option as well. It would be great if you can help me to use this library for stegnography.