diff --git a/apps/Backend/src/routes/documents.ts b/apps/Backend/src/routes/documents.ts
index 2793114..f7d42da 100644
--- a/apps/Backend/src/routes/documents.ts
+++ b/apps/Backend/src/routes/documents.ts
@@ -385,7 +385,7 @@ router.put(
 
       const updated = await storage.updatePdfFile(id, {
         filename: file?.originalname,
-        pdfData: file?.buffer,
+        pdfData: file?.buffer as any,
       });
 
       if (!updated)