diff --git a/renderer/carbone-templates/433a0593-d3cf-414e-8763-ab5f87cbc75c.docx b/renderer/carbone-templates/433a0593-d3cf-414e-8763-ab5f87cbc75c.docx
index 089b7f1..0969f58 100644
Binary files a/renderer/carbone-templates/433a0593-d3cf-414e-8763-ab5f87cbc75c.docx and b/renderer/carbone-templates/433a0593-d3cf-414e-8763-ab5f87cbc75c.docx differ
diff --git a/renderer/carbone-templates/registry.json b/renderer/carbone-templates/registry.json
index 4ceb2f0..3834aa3 100644
--- a/renderer/carbone-templates/registry.json
+++ b/renderer/carbone-templates/registry.json
@@ -5,6 +5,7 @@
     "filename": "433a0593-d3cf-414e-8763-ab5f87cbc75c.docx",
     "originalName": "master_cv_template.docx",
     "path": "/root/workspace/cv-app/renderer/carbone-templates/433a0593-d3cf-414e-8763-ab5f87cbc75c.docx",
-    "uploadedAt": "2026-07-16T09:03:29.601Z"
+    "uploadedAt": "2026-07-16T09:03:29.601Z",
+    "updatedAt": "2026-07-16T11:09:51.737Z"
   }
 ]
\ No newline at end of file
diff --git a/renderer/onlyoffice-service.js b/renderer/onlyoffice-service.js
index 6c4df80..a5aaa40 100644
--- a/renderer/onlyoffice-service.js
+++ b/renderer/onlyoffice-service.js
@@ -109,8 +109,12 @@ function verifyToken(token) {
  * ONLYOFFICE uses this to identify document sessions and for caching.
  * Must be unique per document + version (so re-edits get fresh sessions).
  */
-function generateDocKey(templateId) {
-  return `cvtemplate_${templateId}_${Date.now()}_${crypto.randomBytes(4).toString('hex')}`;
+function generateDocKey(templateId, fileMtime) {
+  // Include the file's modification time in the key so that
+  // when the file is updated via callback, the next edit session
+  // gets a completely new key and ONLYOFFICE fetches the fresh file
+  const mtime = fileMtime || Date.now();
+  return `cvtemplate_${templateId}_${mtime}_${crypto.randomBytes(4).toString('hex')}`;
 }
 
 // ============================================================
@@ -131,14 +135,16 @@ router.get('/:templateId/config', (req, res) => {
     return res.status(404).json({ error: 'Template file missing' });
   }
   
-  const docKey = generateDocKey(templateId);
+  // Get file modification time for cache-busting doc key
+  const fileStats = fs.statSync(template.path);
+  const fileMtime = fileStats.mtimeMs;
+  const docKey = generateDocKey(templateId, fileMtime);
   const fileName = template.originalName || template.name + '.docx';
   
-  // Build the editor config
-  // The document URL must be accessible from ONLYOFFICE's perspective.
-  // In Docker: http://cv-backend:8771/api/onlyoffice/<id>/download
-  // In dev: http://<host>:8771/api/onlyoffice/<id>/download
-  const documentUrl = `${BACKEND_PUBLIC_URL}/api/onlyoffice/${templateId}/download`;
+  // Add cache-busting timestamp to the document URL so ONLYOFFICE
+  // always fetches the latest version from our backend
+  const cacheBuster = Date.now();
+  const documentUrl = `${BACKEND_PUBLIC_URL}/api/onlyoffice/${templateId}/download?cb=${cacheBuster}`;
   const callbackUrl = `${BACKEND_PUBLIC_URL}/api/onlyoffice/${templateId}/callback`;
   
   const config = {