Only want posts from certain categories listed

I recently upgraded to the latest version of wordpress. It seems like everything carried over nicely and is working except for my listing of blog posts on my site.

In my theme’s index, i have the following code:

if(is_home()) query_posts(array_merge(array('cat' => 1), $wp_query->query));

This is supposed to only show posts from my ‘uncategorized’ posts (which happens to be category #1)

How come this is no longer working with the latest version of WP?