diff --git a/bower.json b/bower.json
index 064a9dbc2..0f69fe4a9 100644
--- a/bower.json
+++ b/bower.json
@@ -52,7 +52,8 @@
     "esper.js": "http://files.codecombat.com/esper.tar.gz",
     "algoliasearch": "^3.13.1",
     "algolia-autocomplete.js": "^0.17.0",
-    "algolia-autocomplete-no-conflict": "1.0.0"
+    "algolia-autocomplete-no-conflict": "1.0.0",
+    "promise-polyfill": "^5.2.1"
   },
   "overrides": {
     "algolia-autocomplete.js": {