--- a/toolkit/content/license.html
+++ b/toolkit/content/license.html
@@ -200,16 +200,17 @@
       <li><a href="about:license#vtune">VTune License</a></li>
       <li><a href="about:license#walkdir">walkdir License</a></li>
       <li><a href="about:license#webrtc">WebRTC License</a></li>
       <li><a href="about:license#winapi">winapi License</a></li>
       <li><a href="about:license#winapi-build">winapi-build License</a></li>
       <li><a href="about:license#winreg">winreg License</a></li>
       <li><a href="about:license#x264">x264 License</a></li>
       <li><a href="about:license#xiph">Xiph.org Foundation License</a></li>
+      <li><a href="about:license#xml-rs">xml-rs License</a></li>
     </ul>
 
 <br>
 
     <ul>
       <li><a href="about:license#other-notices">Other Required Notices</a>
       <li><a href="about:license#optional-notices">Optional Notices</a>
 #ifdef XP_WIN
@@ -7657,16 +7658,48 @@ DATA, OR PROFITS; OR BUSINESS INTERRUPTI
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 </pre>
 
 
     <hr>
 
+    <h1><a id="xml-rs"></a>xml-rs License</h1>
+
+    <p>This license applies to files in the directory
+    <code>third_party/rust/xml-rs</code>.</p>
+
+<pre>
+The MIT License (MIT)
+
+Copyright (c) 2014 Vladimir Matveev
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+</pre>
+
+
+    <hr>
+
     <h1><a id="other-notices"></a>Other Required Notices</h1>
 
     <ul>
       <li>This software is based in part on the work of the Independent
           JPEG Group.</li>
       <li>Portions of the OS/2 and Android versions
           of this software are copyright &copy;1996-2012
           <a href="http://www.freetype.org/">The FreeType Project</a>.