diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 39fd5cf696..330e360d69 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -2609,6 +2609,18 @@
     </para>
 </section>
 
+<section id='ref-classes-tinderclient'>
+    <title><filename>tinderclient.bbclass</filename></title>
+
+    <para>
+        The <filename>tinderclient</filename> class submits build results to
+        an external Tinderbox instance.
+        <note>
+            This class is currently unmaintained.
+        </note>
+    </para>
+</section>
+
 <section id='ref-classes-useradd'>
     <title>Adding Users - <filename>useradd.bbclass</filename></title>