diff --git a/docs/migration.html b/docs/migration.html
index c3529b8371..de0c8a538a 100644
--- a/docs/migration.html
+++ b/docs/migration.html
@@ -80,6 +80,10 @@ lead: "Guidance on how to upgrade from Bootstrap v2.x to v3.x with emphasis on m
           <td><code>.btn-large</code></td>
           <td><code>.btn-lg</code></td>
         </tr>
+        <tr>
+          <td><code>.alert</code></td>
+          <td><code>.alert .alert-warning</code></td>
+        </tr>
         <tr>
           <td><code>.alert-error</code></td>
           <td><code>.alert-danger</code></td>