query_posts Category not working

I am wanting to have this sidebar widget just show a certain category. I have tried adding 'category_name' => 'my-category-slug', but no luck just doesn’t display the widget at all

<?php wp_reset_query(); query_posts(
                    array(
                        'post_type' => 'news',
                        'post__not_in' => get_option('sticky_posts'),
                        'orderby' => 'date',
                        'order' => 'DESC',
                        'posts_per_page' => '3'
                    )
                );

http://quptheweb.com/vop/pediatrics/