diff --git a/reference/json/versions.xml b/reference/json/versions.xml
index ac0d1100ea..3f73920940 100644
--- a/reference/json/versions.xml
+++ b/reference/json/versions.xml
@@ -7,6 +7,10 @@
  <function name='json_decode' from='PHP 5 &gt;= 5.2.0, PECL json &gt;= 1.2.0'/>
  <function name='json_encode' from='PHP 5 &gt;= 5.2.0, PECL json &gt;= 1.2.0'/>
  <function name='json_last_error' from='PHP 5 &gt;= 5.3.0'/>
+
+ <!-- JsonSerializable -->
+ <function name="jsonserializable" from="PHP 5 &gt;= 5.4.0" />
+ <function name="jsonserializable::jsonserialize" from="PHP 5 &gt;= 5.4.0" />
 </versions>
 
 <!-- Keep this comment at the end of the file
@@ -28,4 +32,4 @@ End:
 vim600: syn=xml fen fdm=syntax fdl=2 si
 vim: et tw=78 syn=sgml
 vi: ts=1 sw=1
--->
\ No newline at end of file
+-->