diff --git a/explore/package.json b/explore/package.json
index 31a7ab54..0542a4e1 100644
--- a/explore/package.json
+++ b/explore/package.json
@@ -49,6 +49,7 @@
     "ts-md5": "^1.2.0",
     "tslib": "^1.9.0",
     "wikidata-sdk": "^5.2.9",
+    "ng-recaptcha": "^3.0.5",
     "zone.js": "^0.8.26"
   },
   "devDependencies": {