diff --git a/lib/src/polyfills.ts b/lib/src/polyfills.ts
index 4de6837..73b70a6 100644
--- a/lib/src/polyfills.ts
+++ b/lib/src/polyfills.ts
@@ -6,3 +6,4 @@ import 'core-js/es/object/get-own-property-descriptors';
 import 'core-js/es/map';
 import 'core-js/es/set';
 import 'core-js/es/symbol';
+import 'core-js/es/weak-map';
diff --git a/package.json b/package.json
index 7419860..7d3ea03 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@hcaptcha/loader",
   "description": "This is a JavaScript library to easily configure the loading of the hCaptcha JS client SDK with built-in error handling.",
-  "version": "1.2.3",
+  "version": "1.2.4",
   "author": "hCaptcha team and contributors",
   "license": "MIT",
   "keywords": [