diff --git a/.babelrc b/.babelrc
index 32c6a1a..a5a58b5 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,4 +1,3 @@
 {
-  "optional": ["runtime"],
   "blacklist": ["useStrict"]
-}
\ No newline at end of file
+}