diff --git a/build/package.json b/build/package.json
index e35a463ed2fa..80e25ce0a073 100644
--- a/build/package.json
+++ b/build/package.json
@@ -10,7 +10,7 @@
   "homepage": "https://github.com/owncloud/",
   "contributors": [],
   "dependencies": {
-    "@bower_components/backbone": "jashkenas/backbone#1.3.3",
+    "@bower_components/backbone": "jashkenas/backbone#1.4.0",
     "@bower_components/base64": "davidchambers/Base64.js#1.0.2",
     "@bower_components/blueimp-md5": "blueimp/JavaScript-MD5#2.10.0",
     "@bower_components/bootstrap": "twbs/bootstrap#3.3.7",
diff --git a/build/yarn.lock b/build/yarn.lock
index 3104c6085991..5588a5cc186f 100644
--- a/build/yarn.lock
+++ b/build/yarn.lock
@@ -2,9 +2,10 @@
 # yarn lockfile v1
 
 
-"@bower_components/backbone@jashkenas/backbone#1.3.3":
-  version "1.3.3"
-  resolved "https://codeload.github.com/jashkenas/backbone/tar.gz/8ec88604732944f197b352a6be22c8216ea9d3a1"
+"@bower_components/backbone@jashkenas/backbone#1.4.0":
+  version "1.4.0"
+  uid "5de45fc9e1cbe5f61cf459067207bbe73451ac91"
+  resolved "https://codeload.github.com/jashkenas/backbone/tar.gz/5de45fc9e1cbe5f61cf459067207bbe73451ac91"
   dependencies:
     underscore ">=1.8.3"