diff --git a/package.json b/package.json
index d35c695..c5938ab 100644
--- a/package.json
+++ b/package.json
@@ -26,12 +26,12 @@
     "globule": "^1.0.0"
   },
   "devDependencies": {
-    "async": "^2.6.0",
+    "async": "^2.6.1",
     "grunt": "^1.0.1",
     "grunt-benchmark": "^1.0.0",
     "grunt-cli": "^1.2.0",
     "grunt-contrib-jshint": "^1.1.0",
-    "grunt-contrib-nodeunit": "^1.0.0",
+    "grunt-contrib-nodeunit": "^2.0.0",
     "rimraf": "^2.5.2",
     "semistandard": "^12.0.1"
   },