diff --git a/.babelrc b/.babelrc
index 9f55985..dc2f18d 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,6 +1,12 @@
 {
-    "presets": [
-      ["@babel/preset-env", {"targets": {"browsers": "last 1 Chrome versions"}}]
-    ],
-    "plugins": ["@babel/plugin-proposal-class-properties"]
+  "presets": [
+    [
+      "@babel/preset-env",
+      { "targets": { "browsers": "last 1 Chrome versions" } }
+    ]
+  ],
+  "plugins": [
+    "@babel/plugin-proposal-class-properties",
+    "@babel/plugin-proposal-private-methods"
+  ]
 }