diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index e1c62c94750..5fc9f6c8f5a 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -585,6 +585,7 @@ appropriate nops inserted to ensure restartability.</li>
     C++ programs</a>, preventing intermixing between C++ compiled by the CBE and
     C++ code compiled with llc or native compilers.</li>
 <li>The C backend does not support all exception handling constructs.</li>
+<li>The C backend does not support arbitrary precision integers.</li>
 </ul>
 
 </div>