diff --git a/plugins/CoreUpdater/templates/newVersionAvailable.twig b/plugins/CoreUpdater/templates/newVersionAvailable.twig
index 348b78923b59dd125ba6060f91e600737f7b5bb9..8da941c81f3fd70addfcb66b3fbbf1ad6a026ec7 100644
--- a/plugins/CoreUpdater/templates/newVersionAvailable.twig
+++ b/plugins/CoreUpdater/templates/newVersionAvailable.twig
@@ -22,9 +22,9 @@
             <form id="oneclickupdate" action="index.php">
                 <input type="hidden" name="module" value="CoreUpdater"/>
                 <input type="hidden" name="action" value="oneClickUpdate"/>
-                <input id="updateAutomatically" type="submit" class="btn" value="{{ 'CoreUpdater_UpdateAutomatically'|translate }}"/>
+                <input id="updateAutomatically" type="submit" class="btn btn-lg" value="{{ 'CoreUpdater_UpdateAutomatically'|translate }}"/>
                 {% endif %}
-                <a class="btn"
+                <a class="btn btn-lg"
                    href="{{ piwik_latest_version_url }}?cb={{ piwik_new_version }}">{{ 'CoreUpdater_DownloadX'|translate(piwik_new_version) }}</a><br/>
                 {% if can_auto_update %}
             </form>