diff --git a/language/predefined/weakreference.xml b/language/predefined/weakreference.xml
index 1dd70f732f7e..cf3a2600561c 100644
--- a/language/predefined/weakreference.xml
+++ b/language/predefined/weakreference.xml
@@ -80,6 +80,30 @@ NULL
    </para>
   </section>
 
+  <section role="changelog">
+   &reftitle.changelog;
+   <informaltable>
+    <tgroup cols="2">
+     <thead>
+      <row>
+       <entry>&Version;</entry>
+       <entry>&Description;</entry>
+      </row>
+     </thead>
+     <tbody>
+      <row>
+       <entry>8.4.0</entry>
+       <entry>
+        The output of <methodname>WeakReference::__debugInfo</methodname> now includes
+        the referenced object, or <literal>NULL</literal> if the reference is no longer
+        valid.
+       </entry>
+      </row>
+     </tbody>
+    </tgroup>
+   </informaltable>
+  </section>
+
  </partintro>
 
  &language.predefined.weakreference.construct;