diff --git a/babel.config.js b/babel.config.js
index da4b00af..72becfea 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -48,6 +48,18 @@ module.exports = function(api) {
           loose: true
         }
       ],
+      [
+        '@babel/plugin-proposal-private-methods',
+        {
+          loose: true
+        }
+      ],
+      [
+        '@babel/plugin-proposal-private-property-in-object',
+        {
+          loose: true
+        }
+      ],
       [
         '@babel/plugin-proposal-object-rest-spread',
         {