diff --git a/reference/pgsql/functions/pg-unescape-bytea.xml b/reference/pgsql/functions/pg-unescape-bytea.xml
index bdcf83a3e1..3a9857858c 100644
--- a/reference/pgsql/functions/pg-unescape-bytea.xml
+++ b/reference/pgsql/functions/pg-unescape-bytea.xml
@@ -85,7 +85,31 @@
    </example>
   </para>
  </refsect1>
- 
+
+ <refsect1 role="changelog">
+  &reftitle.changelog;
+  <para>
+   <informaltable>
+    <tgroup cols="2">
+     <thead>
+      <row>
+       <entry>&Version;</entry>
+       <entry>&Description;</entry>
+      </row>
+     </thead>
+     <tbody>
+      <row>
+       <entry>5.5.2</entry>
+       <entry>
+        A warning is thrown if the input string is invalid.
+       </entry>
+      </row>
+     </tbody>
+    </tgroup>
+   </informaltable>
+  </para>
+ </refsect1>
+
  <refsect1 role="seealso">
   &reftitle.seealso;
   <para>