diff --git a/package.json b/package.json
index a30fed03cf..e6145562cf 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
   "scripts": {
     "test": "./test/run_tests.sh",
     "start": "grunt run:dev",
-    "postinstall": "./node_modules/bower/bin/bower install -f"
+    "postinstall": "./node_modules/bower/bin/bower --config.interactive=false install -f"
   },
   "devDependencies": {
     "protractor": "~0.14.0",