diff --git a/reference/math/functions/mt-srand.xml b/reference/math/functions/mt-srand.xml
index 81dbdf0008..79dcdf649a 100644
--- a/reference/math/functions/mt-srand.xml
+++ b/reference/math/functions/mt-srand.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.11 $ -->
+<!-- $Revision: 1.12 $ -->
 <refentry id="function.mt-srand">
  <refnamediv>
   <refname>mt_srand</refname>
@@ -54,6 +54,16 @@
         and defaults to a random value if omitted.
        </entry>
       </row>
+      <row>
+       <entry>Since 5.2.1</entry>
+       <entry>
+        The Mersenne Twister implementation in PHP now uses a new seeding
+        algorithm by Richard Wagner. Identical seeds no longer produce the same
+        sequence of values they did in previous versions. This behavior is not
+        expected to change again, but it is considered unsafe to rely upon it
+        nonetheless.
+       </entry>
+      </row>
      </tbody>
     </tgroup>
    </informaltable>