diff --git a/xos/gui/package.json b/xos/gui/package.json
index f9d893b..6859bed 100644
--- a/xos/gui/package.json
+++ b/xos/gui/package.json
@@ -8,6 +8,7 @@
     "angular-toastr": "^2.1.1",
     "angular-ui-bootstrap": "^2.3.1",
     "angular-ui-router": "1.0.0-beta.1",
+    "angularjs-slider": "^6.4.0",
     "bootstrap": "^3.3.7",
     "http-proxy": "^1.16.2",
     "jquery": "^3.1.1",