diff --git a/reference/filesystem/versions.xml b/reference/filesystem/versions.xml
index d8b01d0a33..ac5571a9aa 100644
--- a/reference/filesystem/versions.xml
+++ b/reference/filesystem/versions.xml
@@ -74,6 +74,8 @@
  <function name='readfile' from='PHP 4, PHP 5'/>
  <function name='readlink' from='PHP 4, PHP 5'/>
  <function name='realpath' from='PHP 4, PHP 5'/>
+ <function name='realpath_cache_size' from='PHP 5 &gt;= 5.3.2'/>
+ <function name='realpath_cache_get' from='PHP 5 &gt;= 5.3.2'/>
  <function name='rename' from='PHP 4, PHP 5'/>
  <function name='rewind' from='PHP 4, PHP 5'/>
  <function name='rmdir' from='PHP 4, PHP 5'/>
@@ -106,4 +108,5 @@ 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
+-->
+