diff --git a/ietf/bower.json b/ietf/bower.json
index 710d76ec7..03d1ecb9b 100644
--- a/ietf/bower.json
+++ b/ietf/bower.json
@@ -15,7 +15,8 @@
     "respond": "~1",
     "select2": "~3",
     "select2-bootstrap-css": "~1",
-    "spin.js": "~2"
+    "spin.js": "~2",
+    "zxcvbn": "~4"
   },
   "devDependencies": {},
   "overrides": {