diff --git a/babel.config.js b/babel.config.js
index 4df194934b..d031248a62 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -64,7 +64,8 @@ module.exports = function(api) {
         {
           async: false
         }
-      ]
+      ],
+      ["@babel/plugin-proposal-private-property-in-object", { "loose": true }]
     ].filter(Boolean)
   }
 }