diff --git a/Website/templates/my_invoices.html b/Website/templates/my_invoices.html
index b1e4e1a..69e0025 100644
--- a/Website/templates/my_invoices.html
+++ b/Website/templates/my_invoices.html
@@ -59,12 +59,25 @@
                         </td>
                         <td>
                             {% if invoice.has_hauptvertrag %}
-                                <a href="{{ url_for('view_hauptvertrag', invoice_id=invoice.id) }}" target="_blank" rel="noopener" class="btn btn-link btn-contract">
-                                    <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M14 2H6a2 2 0 00-2 2v16a2 2 0 002 2h12a2 2 0 002-2V8z"/><polyline points="14 2 14 8 20 8"/></svg>
-                                    Vertrag öffnen
-                                </a>
+                                <div style="display: flex; gap: 0.5rem; align-items: center;">
+                                    <a href="{{ url_for('view_hauptvertrag', invoice_id=invoice.id) }}" target="_blank" rel="noopener" class="btn btn-link btn-contract">
+                                        <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M14 2H6a2 2 0 00-2 2v16a2 2 0 002 2h12a2 2 0 002-2V8z"/><polyline points="14 2 14 8 20 8"/></svg>
+                                        Öffnen
+                                    </a>
+                                    
+                                    <!-- Bearbeiten/Ersetzen Button -->
+                                    <div class="upload-inline-form">
+                                        <label class="btn btn-outline" style="margin: 0; padding: 0.4rem 0.6rem; cursor: pointer;" title="Vertrag aktualisieren/ersetzen">
+                                            <input type="file" multiple accept="image/*,application/pdf" onchange="openUploadModal(event, '{{ invoice.id }}')" style="display: none;">
+                                            <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                                                <path d="M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7"></path>
+                                                <path d="M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z"></path>
+                                            </svg>
+                                        </label>
+                                    </div>
+                                </div>
                             {% else %}
-                                <!-- WICHTIG: Kein Form-Submit mehr, stattdessen JS-Aufruf und 'multiple' -->
+                                <!-- Normaler Erst-Upload -->
                                 <div class="upload-inline-form">
                                     <label class="file-dropzone">
                                         <input type="file" multiple accept="image/*,application/pdf" onchange="openUploadModal(event, '{{ invoice.id }}')">