--- a/toolkit/content/license.html
+++ b/toolkit/content/license.html
@@ -75,16 +75,17 @@
       <li><a href="about:license#arm">ARM License</a></li>
       <li><a href="about:license#atty">atty License</a></li>
       <li><a href="about:license#babel">Babel License</a></li>
       <li><a href="about:license#babylon">Babylon License</a></li>
       <li><a href="about:license#base64">base64 License</a></li>
       <li><a href="about:license#bincode">bincode License</a></li>
       <li><a href="about:license#bindgen">bindgen License</a></li>
       <li><a href="about:license#bspatch">bspatch License</a></li>
+      <li><a href="about:license#byteorder">byteorder License</a></li>
       <li><a href="about:license#cairo">Cairo Component Licenses</a></li>
       <li><a href="about:license#chromium">Chromium License</a></li>
       <li><a href="about:license#codemirror">CodeMirror License</a></li>
       <li><a href="about:license#cubic-bezier">cubic-bezier License</a></li>
       <li><a href="about:license#d3">D3 License</a></li>
       <li><a href="about:license#dagre-d3">Dagre-D3 License</a></li>
       <li><a href="about:license#diff">diff License</a></li>
       <li><a href="about:license#dtoa">dtoa License</a></li>
@@ -2919,16 +2920,48 @@ HOWEVER CAUSED AND ON ANY THEORY OF LIAB
 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="byteorder"></a>byteorder License</h1>
+
+    <p>This license applies to files in the directory
+    <code>third_party/rust/byteorder</code>.</p>
+
+<pre>
+The MIT License (MIT)
+
+Copyright (c) 2015 Andrew Gallant
+
+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="cairo"></a>Cairo Component Licenses</h1>
 
     <p>This license, with different copyright holders, applies to certain files
      in the directory <code>gfx/cairo/</code>. The copyright
      holders and the applicable ranges of dates are as follows:
 
     <ul>
 <li>2004 Richard D. Worth