diff --git a/package.json b/package.json
index b551631bd9eda3..29461906d77c41 100644
--- a/package.json
+++ b/package.json
@@ -134,7 +134,7 @@
   "dependencies": {
     "absolute-path": "^0.0.0",
     "art": "^0.10.0",
-    "async": "^2.4.0",
+    "async": "^3.2.2",
     "babel-core": "^6.24.1",
     "babel-generator": "^6.24.1",
     "babel-plugin-external-helpers": "^6.18.0",
@@ -205,7 +205,7 @@
     "stacktrace-parser": "^0.1.3",
     "temp": "0.8.3",
     "throat": "^3.0.0",
-    "uglify-js": "2.7.5",
+    "uglify-js": "2.8.6",
     "whatwg-fetch": "^1.0.0",
     "wordwrap": "^1.0.0",
     "write-file-atomic": "^1.2.0",