diff --git a/package.json b/package.json
index 6191397..0bb8a18 100644
--- a/package.json
+++ b/package.json
@@ -33,12 +33,12 @@
   },
   "homepage": "http://www.wp-pay.org/gateways/pay-nl/",
   "devDependencies": {
-    "grunt": "^1.0.3",
-    "grunt-contrib-jshint": "^2.0.0",
+    "grunt": "^1.0.4",
+    "grunt-contrib-jshint": "^2.1.0",
     "grunt-phpcs": "^0.4.0",
     "grunt-phplint": "0.1.0",
     "grunt-phpmd": "^0.1.1",
     "grunt-phpunit": "^0.3.6",
-    "load-grunt-tasks": "^4.0.0"
+    "load-grunt-tasks": "^5.0.0"
   }
 }