diff --git a/_layouts/default.html b/_layouts/default.html
index c333a0e..6b8d26f 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -41,13 +41,14 @@
                 <li><a href="/index.html#databases_and_pdo">Databases and PDO</a></li>
                 <li><a href="/index.html#security">Security</a>
                     <ul>
+                        <li><a href="/index.html#web_application_security">Web Application Security</a></li>
                         <li><a href="/index.html#password_hashing_with_bcrypt">Password Hashing with Bcrypt</a></li>
                         <li><a href="/index.html#dependency_management">Dependency Management</a></li>
                     </ul>
                 </li>
-                <li><a href="/index.html#web_application_security">Web Application Security</a></li>
-                <li><a href="/index.html#popular_frameworks">Popular Frameworks</a></li>
-                <li><a href="/index.html#links_and_resources">Links &amp; Resources</a></li>
+                <li><a href="/index.html#testing">Testing</a></li>
+                <li><a href="/index.html#libraries_and_frameworks">Libraries and Frameworks</a></li>
+                <li><a href="/index.html#resources">Resources</a></li>
             </ul>
         </nav>
         <div class="site-content">