diff --git a/web3.js/babel.config.json b/web3.js/babel.config.json
index a1b073b5d..f8a99f501 100644
--- a/web3.js/babel.config.json
+++ b/web3.js/babel.config.json
@@ -9,6 +9,23 @@
     ["@babel/preset-typescript"]
   ],
   "plugins": [
-    "@babel/plugin-proposal-class-properties"
+    [
+      "@babel/plugin-proposal-class-properties",
+      {
+        "loose": true
+      }
+    ],
+    [
+      "@babel/plugin-proposal-private-methods",
+      {
+        "loose": true
+      }
+    ],
+    [
+      "@babel/plugin-proposal-private-property-in-object",
+      {
+        "loose": true
+      }
+    ]
   ]
 }
\ No newline at end of file