--- a/CHANGES.html	Sat Jul 05 09:51:04 2014 -0700
+++ b/CHANGES.html	Tue Jul 08 08:27:21 2014 +0200
@@ -54,6 +54,8 @@
 <h1>Changes from ns-3.20 to ns-3.21</h1>
 <h2>New API:</h2>
 <ul>
+  <li> New "const double& SpectrumValue:: operator[] (size_t index) const".
+  </li>
 </ul>
 
 <h2>Changes to existing API:</h2>