diff --git a/bower.json b/bower.json
index 85ef7d286e..4933c615cc 100644
--- a/bower.json
+++ b/bower.json
@@ -24,8 +24,7 @@
     "fullcalendar": "^3.10.2",
     "mousetrap": "^1.6",
     "bootstrap-rtl-ondemand": "^3.3.4-ondemand",
-    "Sortable": "sortablejs#^1.8.4",
-    "popper.js": "https://unpkg.com/popper.js"
+    "Sortable": "sortablejs#^1.8.4"
   },
   "devDependencies": {
     "qunit": "^1.18"
diff --git a/index.html b/index.html
index 8bda3f219a..302f961cf4 100644
--- a/index.html
+++ b/index.html
@@ -13,8 +13,6 @@ this repository contains the full copyright notices and license terms. -->
         <script type="text/javascript" src="bower_components/bootstrap/dist/js/bootstrap.min.js"></script>
         <script type="text/javascript" src="bower_components/moment/min/moment.min.js"></script>
         <script type="text/javascript" src="bower_components/moment/min/locales.min.js"></script>
-        <script type="text/javascript" src="bower_components/popper.js/index.js"></script>
-        <script type="text/javascript" src="bower_components/tempusdominus-bootstrap-3/build/js/tempusdominus-bootstrap-3.min.js"></script>
         <script type="text/javascript" src="bower_components/gettext.js/dist/gettext.min.js"></script>
         <script type="text/javascript" src="bower_components/d3/d3.min.js"></script>
         <script type="text/javascript" src="bower_components/c3/c3.min.js"></script>