diff --git a/babel.config.js b/babel.config.js
index d031248a62..6380fdbab0 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -65,7 +65,8 @@ module.exports = function(api) {
           async: false
         }
       ],
-      ["@babel/plugin-proposal-private-property-in-object", { "loose": true }]
+      ["@babel/plugin-proposal-private-property-in-object", { "loose": true }],
+      ["@babel/plugin-proposal-private-methods", { "loose": true }]
     ].filter(Boolean)
   }
 }