diff --git a/babel.config.json b/babel.config.json
index f2178b0..6baa20d 100644
--- a/babel.config.json
+++ b/babel.config.json
@@ -3,6 +3,7 @@
   "plugins": [
     "@babel/plugin-transform-async-to-generator",
     "@babel/plugin-transform-strict-mode",
+    "@babel/plugin-proposal-optional-chaining",
     [
       "@babel/plugin-proposal-decorators",
       {