diff --git a/frontend/src/components/Sidebar.vue b/frontend/src/components/Sidebar.vue
index 564e85a..0d7e271 100644
--- a/frontend/src/components/Sidebar.vue
+++ b/frontend/src/components/Sidebar.vue
@@ -70,6 +70,12 @@
                     </router-link>
                 </li>
             </ul>
+            <div>
+                    <div class="alert alert-warning m-2" role="alert">
+                        <h4 class="alert-heading">Warning!</h4>
+                        This is a UI Prototype, 50% of of the content and UI elements are placeholders or unfinished experimental features.
+                    </div>
+            </div>
             <div class="sidebar-version" :title="versionTitle">{{ frontendCommit }}{{ backendCommit ? ' / ' + backendCommit : '' }}</div>
         </div>
     </nav>