diff --git a/site/docs/configuration.md b/site/docs/configuration.md
index e2011142..27fee35c 100644
--- a/site/docs/configuration.md
+++ b/site/docs/configuration.md
@@ -350,6 +350,14 @@ redcloth:
   hard_breaks: true
 {% endhighlight %}
 
+<div class="note unreleased">
+  <h5>Kramdown as the default is currently unreleased.</h5>
+  <p>
+    In v2.0.0.alpha.1 and above, we've deprecated Maruku and will default to
+    Kramdown instead of Maruku. All versions below this will use Maruku as the
+    default.
+  </p>
+</div>
 
 ## Markdown Options