diff --git a/package.json b/package.json
index a02aa6ea..29dd8df2 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "doc": "grunt jsdoc"
   },
   "dependencies": {
-    "commander": "~2.6.0"
+    "commander": "~2.20.3"
   },
   "devDependencies": {
     "async": "^0.9.2",