diff --git a/pinaxcon/templates/_default_sidebar.html b/pinaxcon/templates/_default_sidebar.html
index 1432aa6..2a8d899 100644
--- a/pinaxcon/templates/_default_sidebar.html
+++ b/pinaxcon/templates/_default_sidebar.html
@@ -15,7 +15,7 @@
                 <div>
                     {% if sponsor.website_logo %}
                         <a href="{{ sponsor.external_url }}">
-                            <img src="{% thumbnail sponsor.website_logo '100x60' %}" alt="{{ sponsor.name }}" />
+                            <img src="{% thumbnail sponsor.website_logo '150x90' %}" alt="{{ sponsor.name }}" />
                         </a>
                     {% else %}
                         <a href="{{ sponsor.external_url }}">{{ sponsor.name }}</a>