Removing Joomla version from the admin footer in Joomla

DO the following

1. browse to directory \administrator\templates\bluestork\html and create a new directory mod_version 

2.Go to directory \administrator\modules\mod_version\tmpl and copy the file default.php to the directory \administrator\templates\bluestork\html\mod_version

3. Browse to the file  default.php from \administrator\templates\bluestork\html\mod_version and change the below code:

 echo '<p align="center">' . $version . '</p>';

to this
echo '<p align="center">' . 'my version' . '</p>';
you can change the text "my version" to any text that you want.