diff --git a/apps/desktop/src/app/sync/destinations/nuclia-cloud.ts b/apps/desktop/src/app/sync/destinations/nuclia-cloud.ts
index f0c0da73b..e5cec0bc9 100644
--- a/apps/desktop/src/app/sync/destinations/nuclia-cloud.ts
+++ b/apps/desktop/src/app/sync/destinations/nuclia-cloud.ts
@@ -1,5 +1,5 @@
-import { FIELD_TYPE, INuclia, Nuclia, NucliaOptions, ResourceProperties, WritableKnowledgeBox } from '@nuclia/core';
-import { map, Observable, of, switchMap, delay } from 'rxjs';
+import { INuclia, Nuclia, NucliaOptions, WritableKnowledgeBox } from '@nuclia/core';
+import { map, Observable, of, switchMap } from 'rxjs';
 import {
   ConnectorParameters,
   ConnectorSettings,
@@ -7,6 +7,7 @@ import {
   Field,
   IDestinationConnector,
 } from '../models';
+import { lookup } from 'mime-types';
 
 const ACCOUNT_KEY = 'NUCLIA_ACCOUNT';
 
@@ -52,7 +53,15 @@ class NucliaCloudKBImpl implements IDestinationConnector {
       const kb$ = this.kb
         ? of(this.kb)
         : this.nuclia.db.getKnowledgeBox(localStorage.getItem(ACCOUNT_KEY) || '', params['kb']);
-      return kb$.pipe(switchMap((kb) => kb.upload(new File([blob], filename)).pipe(map(() => undefined))));
+      return kb$.pipe(
+        switchMap((kb) =>
+          kb
+            .upload(new File([blob], filename), false, {
+              contentType: lookup(filename) || 'application/octet-stream',
+            })
+            .pipe(map(() => undefined)),
+        ),
+      );
     } else {
       return of(undefined);
     }
diff --git a/package.json b/package.json
index e49945ee3..a568a0c77 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "nuclia",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "license": "MIT",
   "author": "Nuclia.cloud",
   "description": "Nuclia frontend apps and libs",
@@ -56,6 +56,7 @@
     "fuse.js": "^3.6.1",
     "googleapis": "^110.0.0",
     "latinize": "^0.5.0",
+    "mime-types": "^2.1.35",
     "mrs-developer": "^1.7.1",
     "ngx-captcha": "^12.0.2",
     "node-machine-id": "^1.1.12",
@@ -109,6 +110,7 @@
     "@types/jexl": "^2.2.0",
     "@types/latinize": "^0.2.15",
     "@types/lru-cache": "^5.1.0",
+    "@types/mime-types": "^2.1.1",
     "@types/node": "18.7.1",
     "@types/perfect-scrollbar": "^1.3.0",
     "@types/spark-md5": "^3.0.2",
diff --git a/yarn.lock b/yarn.lock
index b7b8cba7f..6e21b58f7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7386,6 +7386,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/mime-types@npm:^2.1.1":
+  version: 2.1.1
+  resolution: "@types/mime-types@npm:2.1.1"
+  checksum: 106b5d556add46446a579ad25ff15d6b421851790d887edcad558c90c1e64b1defc72bfbaf4b08f208916e21d9cc45cdb951d77be51268b18221544cfe054a3c
+  languageName: node
+  linkType: hard
+
 "@types/mime@npm:^1":
   version: 1.3.2
   resolution: "@types/mime@npm:1.3.2"
@@ -18302,7 +18309,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"mime-types@npm:^2.1.11, mime-types@npm:^2.1.12, mime-types@npm:^2.1.27, mime-types@npm:^2.1.31, mime-types@npm:~2.1.17, mime-types@npm:~2.1.19, mime-types@npm:~2.1.24, mime-types@npm:~2.1.34, mime-types@npm:~2.1.7":
+"mime-types@npm:^2.1.11, mime-types@npm:^2.1.12, mime-types@npm:^2.1.27, mime-types@npm:^2.1.31, mime-types@npm:^2.1.35, mime-types@npm:~2.1.17, mime-types@npm:~2.1.19, mime-types@npm:~2.1.24, mime-types@npm:~2.1.34, mime-types@npm:~2.1.7":
   version: 2.1.35
   resolution: "mime-types@npm:2.1.35"
   dependencies:
@@ -19397,6 +19404,7 @@ __metadata:
     "@types/jexl": ^2.2.0
     "@types/latinize": ^0.2.15
     "@types/lru-cache": ^5.1.0
+    "@types/mime-types": ^2.1.1
     "@types/node": 18.7.1
     "@types/perfect-scrollbar": ^1.3.0
     "@types/spark-md5": ^3.0.2
@@ -19433,6 +19441,7 @@ __metadata:
     jest-environment-jsdom: 28.1.1
     jest-preset-angular: 12.2.2
     latinize: ^0.5.0
+    mime-types: ^2.1.35
     mrs-developer: ^1.7.1
     ng-mocks: ^14.1.1
     ng-packagr: 14.2.0