diff --git a/views/layout.html b/views/layout.html
index b27b2b0..d412aa4 100644
--- a/views/layout.html
+++ b/views/layout.html
@@ -17,6 +17,7 @@
         <a href="/wiki" class="nav-link {{wikiActive}}">Wiki</a>
         <a href="/agents" class="nav-link {{agentsActive}}">Agents</a>
         <a href="/usage" class="nav-link {{usageActive}}">Usage</a>
+        <button id="theme-toggle" class="btn-secondary" type="button" aria-label="Toggle theme">Dark Mode</button>
       </nav>
     </header>