diff --git a/package.json b/package.json
index ada43cfe..9af3874d 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "ms": "2.0.0"
+    "ms": "^2.1.1"
   },
   "devDependencies": {
     "browserify": "14.4.0",