diff --git a/docs/assets/bootstrap.zip b/docs/assets/bootstrap.zip
index 2c140266b2..0a56f52fd9 100644
Binary files a/docs/assets/bootstrap.zip and b/docs/assets/bootstrap.zip differ
diff --git a/docs/templates/pages/upgrading.mustache b/docs/templates/pages/upgrading.mustache
index 23a53da0e9..45ab0703bd 100644
--- a/docs/templates/pages/upgrading.mustache
+++ b/docs/templates/pages/upgrading.mustache
@@ -111,7 +111,7 @@
   </ul>
   <h3>{{_i}}Navigation{{/i}}</h3>
   <ul>
-    <li>{{_i}}Tabs and pills now require the use of a new base class, <code>.nav</code>, on their <code>&lt;ul&gt;</code>{{/i}}</li>
+    <li>{{_i}}Tabs and pills now require the use of a new base class, <code>.nav</code>, on their <code>&lt;ul&gt;</code> and the class names are now <code>.nav-pills</code> and <code>.nav-tabs</code>.{{/i}}</li>
     <li>{{_i}}New nav list variation added that uses the same base class, <code>.nav</code>{{/i}}</li>
     <li>{{_i}}Vertical tabs and pills have been added&mdash;just add <code>.nav-stacked</code> to the <code>&lt;ul&gt;</code>{{/i}}</li>
     <li>{{_i}}Pills were restyled to be less rounded by default{{/i}}</li>
diff --git a/docs/upgrading.html b/docs/upgrading.html
index 39da8e1f7e..47cac06dcc 100644
--- a/docs/upgrading.html
+++ b/docs/upgrading.html
@@ -187,7 +187,7 @@
   </ul>
   <h3>Navigation</h3>
   <ul>
-    <li>Tabs and pills now require the use of a new base class, <code>.nav</code>, on their <code>&lt;ul&gt;</code></li>
+    <li>Tabs and pills now require the use of a new base class, <code>.nav</code>, on their <code>&lt;ul&gt;</code> and the class names are now <code>.nav-pills</code> and <code>.nav-tabs</code>.</li>
     <li>New nav list variation added that uses the same base class, <code>.nav</code></li>
     <li>Vertical tabs and pills have been added&mdash;just add <code>.nav-stacked</code> to the <code>&lt;ul&gt;</code></li>
     <li>Pills were restyled to be less rounded by default</li>