diff --git a/package.json b/package.json
index 04367e9b..683ca1b6 100644
--- a/package.json
+++ b/package.json
@@ -23,11 +23,11 @@
     "LICENSE"
   ],
   "dependencies": {
-    "commander": "~2.15.0",
+    "commander": "~2.16.0",
     "source-map": "~0.6.1"
   },
   "devDependencies": {
-    "acorn": "~5.5.3",
+    "acorn": "~5.7.1",
     "semver": "~5.5.0"
   },
   "scripts": {