diff --git a/roadmap.html b/roadmap.html
index 9f7a7d6e4..10777e806 100644
--- a/roadmap.html
+++ b/roadmap.html
@@ -15,7 +15,10 @@ layout: master
     <tbody>
         <tr>
             <td class="table-danger"></td>
-            <td>Tabbed and stacking window layouts</td>
+            <td>
+                Tabbed and stacking window layouts
+                (<a href="https://github.com/SirCmpwn/sway/pull/566">#556</a>)
+            </td>
         </tr>
         <tr>
             <td class="table-danger"></td>