diff --git a/package.json b/package.json
index 56ecd6aa7f..a6f92abdc6 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "chokidar": "0.11.1",
     "source-map-support": "0.2.8",
     "esutils": "1.1.6",
-    "acorn-6to5": "0.9.1-5",
+    "acorn-6to5": "0.9.1-6",
     "estraverse": "1.8.0",
     "private": "0.1.6"
   },