diff --git a/package.json b/package.json
index 3b7e375..f790b04 100644
--- a/package.json
+++ b/package.json
@@ -25,16 +25,16 @@
      "url" : "https://github.com/bootflat/bootflat.github.io.git"
    },
   "devDependencies": {
-    "grunt": "~0.4.4",
-    "grunt-contrib-clean": "~0.5.0",
-    "grunt-contrib-csslint": "~0.2.0",
-    "grunt-contrib-cssmin": "~0.9.0",
-    "grunt-contrib-uglify": "~0.4.0",
-    "grunt-contrib-sass": "~0.7.3",
-    "grunt-csscomb": "~2.0.1",
+    "grunt": "~1.0.1",
+    "grunt-contrib-clean": "~1.0.0",
+    "grunt-contrib-csslint": "~2.0.0",
+    "grunt-contrib-cssmin": "~1.0.2",
+    "grunt-contrib-uglify": "~2.0.0",
+    "grunt-contrib-sass": "~1.0.0",
+    "grunt-csscomb": "~3.1.1",
     "grunt-html-validation": "~0.1.15",
     "grunt-sed": "~0.1.1",
-    "load-grunt-tasks": "~0.4.0",
-    "time-grunt": "~0.3.1"
+    "load-grunt-tasks": "~3.5.2",
+    "time-grunt": "~1.4.0"
   }
 }