diff --git a/package.json b/package.json
index 5f47c9e1af..b75748aed5 100644
--- a/package.json
+++ b/package.json
@@ -40,13 +40,13 @@
     "fs-readdir-recursive": "0.1.0",
     "lodash": "2.4.1",
     "mkdirp": "0.5.0",
-    "es6-shim": "0.20.3",
+    "es6-shim": "0.21.0",
     "es6-symbol": "0.1.1",
     "regexpu": "0.3.0",
     "source-map": "0.1.40",
     "chokidar": "0.11.1",
     "source-map-support": "0.2.8",
-    "esutils": "1.1.4",
+    "esutils": "1.1.6",
     "acorn-6to5": "0.9.1-4",
     "estraverse": "1.8.0",
     "private": "0.1.6"