diff --git a/www/about.html b/www/about.html
index c3107e1..321a333 100644
--- a/www/about.html
+++ b/www/about.html
@@ -126,7 +126,7 @@ <h1 class="text-center">About Author Tools</h1>
                   <a href="https://github.com/ietf-tools/idnits">idnits</a>
                 </th>
                 <td><span id="spanIdnits"></span></td>
-                <td><a href="https://github.com/ietf-tools/idnits/raw/main/copyright">GNU General Public License</a></td>
+                <td><a href="https://github.com/ietf-tools/idnits/raw/v2/copyright">GNU General Public License</a></td>
               </tr>
               <tr>
                 <th scope="row">
@@ -170,6 +170,20 @@ <h1 class="text-center">About Author Tools</h1>
                 <td><span id="spanRfcdiff"></span></td>
                 <td><a href="https://github.com/ietf-tools/rfcdiff/blob/main/rfcdiff#L64-L83">GNU General Public License</a></td>
               </tr>
+              <tr>
+                <th scope="row">
+                  <a href="https://github.com/mathjax/MathJax-demos-node">tex2svg</a>
+                </th>
+                <td><span id="spanTex2svg"></span></td>
+                <td><a href="https://github.com/mathjax/MathJax-demos-node/raw/master/LICENSE">Apache License</a></td>
+              </tr>
+              <tr>
+                <th scope="row">
+                  <a href="https://github.com/bartp5/libtexprintf">utftex</a>
+                </th>
+                <td><span id="spanUtftex"></span></td>
+                <td><a href="https://github.com/bartp5/libtexprintf/raw/main/COPYING">GNU General Public License</a></td>
+              </tr>
             </tbody>
           </table>
         </div>
diff --git a/www/scripts/about.js b/www/scripts/about.js
index 48a93f7..0c547a5 100644
--- a/www/scripts/about.js
+++ b/www/scripts/about.js
@@ -25,6 +25,8 @@ fetch(request)
     document.getElementById('spanBap').innerHTML = json.versions.bap;
     document.getElementById('spanSvgcheck').innerHTML = json.versions.svgcheck;
     document.getElementById('spanRfcdiff').innerHTML = json.versions.rfcdiff;
+    document.getElementById('spanTex2svg').innerHTML = json.versions.tex2svg;
+    document.getElementById('spanUtftex').innerHTML = json.versions.utftex;
   })
   .catch(error => {
       alertError.style.display = 'block';