wp_get_archives trouble

Greetings,

I’m using the “wp_get_archives()” function, passing by parameters, the type (monthly) and the show_post_count (1).

Along with it, i’m using the “query_posts()” functions, passing by parameter a category_name

here’s a bit of the code:

<?php query_posts('category_name=depoimentos'); ?>
<ul class="sidebar-category-list">
<?php wp_get_archives('type=monthly&show_post_count=1'); ?>
</ul>

My problem is: the function is not showing “depoimentos” category posts, it returns all my posts.

Am I missing something?

Sorry if it’s the wrong section of the forum, i’m a bit confused

Thanks for the help